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Copied form FD 11:
USFJoseph - 19/6/2007 7:04 AM
FD12 Execute Package here
Looks like crew wakeup was at 6:38 ET this morning...
Undocking is set for 10:42 ET this morning...
As previously noted, Atlatis will fly a full 360 degree flyaround after undocking. We should see a very different looking ISS!
Undocking and FD12 constantly updated article: http://www.nasaspaceflight.com/content/?cid=5141
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Are they doing the Atlantis station keeping attitude tests referred to yesterday by Englehof?
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Wow, they tranferred 116 lbs of O2, they mentioned something like 40 lbs would be transferred earlier in the mission when considering extensions. What does EOM+3 mean exactly, is it they have 3 days on orbit O2 after undocking, or after earliest deorbit burn moment or something. when is EOM? (all from last page of Execute package document)
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EOM is End Of Mission. I believe that means we have enough oxygen for 3 potential days of landing opportunities in case of a waveoff on the first. That would mean that they REALLY stretched their supplies when it looked like another docked day would be necessary!
EDIT: did anybody catch the crew wakeup?
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ETEE - 19/6/2007 12:29 PM
Are they doing the Atlantis station keeping attitude tests referred to yesterday by Englehof?
That was mainly completed on Sunday and Monday.
Atlantis going through a full power up following the power downs in case of extra docking day:
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Chris Bergin - 19/6/2007 1:27 PM
ETEE - 19/6/2007 12:29 PM
Are they doing the Atlantis station keeping attitude tests referred to yesterday by Englehof?
That was mainly completed on Sunday and Monday.
Atlantis going through a full power up following the power downs in case of extra docking day:
Yesterday Englehof said that they had used more Atlantis propellant than expected when the Russian computers failed and that they wanted to do a test before undocking to see if they could explain why that was (ie they had probably got their predicted station attitude wrong for minimum propellant loss).
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So they'll land in 6.20 ?
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seruriermarshal - 19/6/2007 1:40 PM
So they'll land in 6.20 ?
They will make their first attempt to land on Thursday.
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Yesterday the thought the weather could force a landing at EDW as thunderstorms were expected around the Cape.
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ETEE - 19/6/2007 1:31 PM
Chris Bergin - 19/6/2007 1:27 PM
ETEE - 19/6/2007 12:29 PM
Are they doing the Atlantis station keeping attitude tests referred to yesterday by Englehof?
That was mainly completed on Sunday and Monday.
Atlantis going through a full power up following the power downs in case of extra docking day:
Yesterday Englehof said that they had used more Atlantis propellant than expected when the Russian computers failed and that they wanted to do a test before undocking to see if they could explain why that was (ie they had probably got their predicted station attitude wrong for minimum propellant loss).
Been looking around the information and nothing sticks out bar yesterday's note:
Chris Bergin - 18/6/2007 10:27 PM
Atlantis still required for some assist. Helping to gain another 4300ft overnight.
There are no notes of attitude assist or testing this morning, will keep checking, but station keeping could relate to updated flyaround proceedures, which we know about from yesterday (Jorge mentioned it I believe).
I'm probably missing something ;) So I'll leave this open for anyone else to chip in.
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Chris Bergin - 19/6/2007 9:05 AM
There are no notes of attitude assist or testing this morning, will keep checking, but station keeping could relate to updated flyaround proceedures, which we know about from yesterday (Jorge mentioned it I believe).
I'm probably missing something ;) So I'll leave this open for anyone else to chip in.
Only saw it in the the status briefing with Phil Engelauf, but I'm catching up...he said that they were planning on handing over attitude control to the orbiter for one hour to (IIRC) get more data on prop usage. Not sure where on the timeline, but the execute package might say...
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Chris Bergin - 19/6/2007 7:44 AM
seruriermarshal - 19/6/2007 1:40 PM
So they'll land in 6.20 ?
They will make their first attempt to land on Thursday.
Will they call up Edwards for Thursday or just wave off 24 hours if the weather at KSC is bad on both attempts? (Sorry if this was already stated and I missed it.) ;)
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psloss - 19/6/2007 2:16 PM
Chris Bergin - 19/6/2007 9:05 AM
There are no notes of attitude assist or testing this morning, will keep checking, but station keeping could relate to updated flyaround proceedures, which we know about from yesterday (Jorge mentioned it I believe).
I'm probably missing something ;) So I'll leave this open for anyone else to chip in.
Only saw it in the the status briefing with Phil Engelauf, but I'm catching up...he said that they were planning on handing over attitude control to the orbiter for one hour to (IIRC) get more data on prop usage. Not sure where on the timeline, but the execute package might say...
Interesting. No note of them doing this so far - and they are fast running out of time to do so.
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Traditional gift from a Texan family:
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Well, Atlantis is controlling the stack right now, but that's normal pre-undocking, rather than a test. Maybe they are using it as an opportunity to test.
Anyway..
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shuttlefan - 19/6/2007 9:28 AM
Will they call up Edwards for Thursday or just wave off 24 hours if the weather at KSC is bad on both attempts?
No, EDW not til Friday. It's mentioned in the Landing thread.
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Very cool picture of an empty payload bay, and the docking port!
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MMT plan for today:
Undock & flyaround (1 lap) 9:42
Sep Burn 10:38
LATE INSPECTIONS:
Unberth OBSS 12:58
Starboard Wing 1:43
Nose Cap 2:58
Port Wing 3:48
OBSS Berth 5:18
RCS Burn 6:48
Crew Sleep 9:08
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Polling of both SS and ISS FCRs complete: All "GO".
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APAS power up procedures in work.
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Dialog of the flyaround, caught it about halfway in:
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ISS in undocking position.
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That sep burn really does seperate the two vehicles. I didn't know Atlantis actually pushes away from ISS, rather than just easing away while both travelling together (like docking).
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"GO" for undocking!
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Go for undocking, and she's in the correct undocking position:
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Solar arrays have been feathered to support undocking.
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ATCS is also "Go for undock"
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Little more undock information. Undock, back away until 2 feet apart, then they will turn firing jets back on.
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Russian MCC - Go for undock, good config.
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ISS in freedrift.
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UNDOCKING!
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Undocking pictures!
Physical seperation!
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Atlantis Departure bells.
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Yurchikhin ringing the ISS bell, calling "Atlantis departing".
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"God speed CJ, thanks for everything"
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ISS back with attitude control.
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Station back in attitude control.
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Atlantis 30 feet from the station.
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Archambault piloting Atlantis away from the Station.
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Orbit night, no KU.. S-Band pictures. Ah well, she has undocked and backed away successfully.
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Integrated GNC At 50 ft from Stack
OMS/RCS F1F & F2F reselected at 50 ft
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70 feet away from ISS.
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90 feet seperation at 2/10ths per second.
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90 feet away, the ISS seems to disappear into the darkness!
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What's that light? Too bright to be the docking laser, isn't it?
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Passing over the northern tip of New Zealand, 10 minutes to sunrise, no KU as the shuttle's KU system is in Radar mode to gauge the distance from the ISS, we have video stills through S-band, may get some KU through TDRS-East in about 15 minutes after the flyaround begins.
Richard
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eeergo - 19/6/2007 4:52 PM
What's that light? Too bright to be the docking laser, isn't it?
Exterior light on the P1 truss.
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eeergo - 19/6/2007 9:52 AM
What's that light? Too bright to be the docking laser, isn't it?
Spotlight on the truss.
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It's some light on the ISS.. Not quite sure which one. Better picture of it here:
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150 feet, acheived in 12 minutes from undock.
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KU.. no RADAR
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eeergo - 19/6/2007 10:52 AM
What's that light? Too bright to be the docking laser, isn't it?
That light is one of the floodlights on the S0 or S1 truss to help illuminate the departing shuttle during this night pass, it is hard to see whether it is on S1 or S0 right now in the dark.
Richard
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Coming up on the halfway point ahead of flyaround.
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about 10minutes till sunrise
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Thanks for the answers, it was S0's, and now the ones from P1 and S1 come into view. I just didn't know the Station was so illuminated :)
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200 feet away:
Pic 2: Just some floodlights coming into view off the ISS. Still 2/10ths foot per second back-away.
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Sunrise is in 4 minutes as I track it here on STSPLUS. 2 minutes to AOS with TDRS-East, should have some good KU on this East pass at some point after the flyaround starts.
Richard
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sts1canada - 19/6/2007 3:59 PM
Sunrise is in 4 minutes as I track it here on STSPLUS. 2 minutes to AOS with TDRS-East, should have some good KU on this East pass at some point after the flyaround starts.
Richard
Good news. Thanking you sir.
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sunrise in 1 minute, handover to East is occurring now, the three floodlights from S1, S0 and P1 trusses are now visible.
Richard
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A little off, but well within centerline requirements (manual control too).
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Sunrise, can see the ISS in all her glory!
Beautiful sight of the S4 and P4 arrays!, strange to see P6 all folded up after all these years (almost 7 years of extended P6 arrays)
Richard
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340 feet distance.
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Sunrise and KU!!
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OMG - it's HUGE!!!
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Thats Beautiful!! :)
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Wow, isn't that magnificent... it amost looks like science-fiction... it's so enormous...
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Woohoo! More pictures of the ISS!
You can see the shuttle silhouette!
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stockman - 19/6/2007 4:05 PM
Thats Beautiful!! :)
We're going to get some money shots out of this folks :)
Seperation now 395 feet.
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This is reality! I never imagine I would see something like this in my life... It almost make me cry!
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Look at the reflection off the solar array wings!
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Wow.
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To all, don't be afraid to add screenshots to what we're getting from Ford. There's some keepers here.
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You can see the shadow of the orbiter on the lower P4 SAWs!
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She gets a whole lot bigger!
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Remove if duplicate...
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Shadow of Atlantis on the Starboard array
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The solar array wings are still in feather mode until Atlantis is at a safe distance I suppose? I don't see them moving.
On the other hand you could see the mounts of the radiators on S1/P1 move very clearly just now! I wasn't even aware that those were moving normally. :o
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Simply breathtaking!
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Sorry for asking, but what's thos tilting structures inside the trusses? CMGs? No, they are not that big, aren't they?
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45 minutes to sunset on this pass, approaching the southwest coast of South America, 40 minutes left of comm & periods of KU with TDRS-East before the ZOE, approaching orbital noon (sun overhead the iss / shuttle), should have excellent lighting for the first part of the fly around starting now!
Richard
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Earth coming into view. That's beautiful! :)
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wow
you can realy see how big she's got
and the differance that p5 makes on the right compared to the left
JJ..
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Why were those objects on the back of the P1 and S1 trusses rotating back and forth?
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Flyaround initiated succesfully. One lap.
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Almost all into view now, starting to see the atmosphere's haze!
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OK, too late, already answered...
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Spiff - 19/6/2007 11:12 AM
On the other hand you could see the mounts of the radiators on S1/P1 move very clearly just now! I wasn't even aware that those were moving normally. :o
Why do they move?
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marsguy - 19/6/2007 5:14 PM
Why were those objects on the back of the P1 and S1 trusses rotating back and forth?
Radiators trying to stay off angle off the sun...
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Absolutely amazing !!
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Lots of fly around pictures coming up!
ISS now weighs 509,000 pounds.
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If you're at work (and allowed to) grab a workmate and dare them to say this isn't cool.
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Flyaround starting
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Speedracer - 19/6/2007 11:15 AM
Spiff - 19/6/2007 11:12 AM
On the other hand you could see the mounts of the radiators on S1/P1 move very clearly just now! I wasn't even aware that those were moving normally. :o
Why do they move?
to maximize exposure of the arrays to space (as much out of direct sunlight as possible). This maximizes the efficiency of cooling. Kind of like the same reason the solar arrays rotate. to maximize the direct sunlight hitting them.
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pippin - 19/6/2007 10:15 AM
marsguy - 19/6/2007 5:14 PM
Why were those objects on the back of the P1 and S1 trusses rotating back and forth?
Radiators trying to stay off angle off the sun...
Wait'll all 6 are open and rotating. That'll be impressive. :)
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are the rotating solar panels 180 degrees out of phase? it seems like one side has the cooling panel pointing toward us and the other side has it pointing away. Is this normal? Does it matter?
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500ft seperation. 20 percent into the lap...heading over South America.
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Thanks much...here...have another screenshot...
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Ford Mustang - 19/6/2007 9:16 AM
ISS now weighs 509,000 pounds.
Still weighs nothing, but masses 509,000 pounds. (Heh, heh, heh!).
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Curious...is the starboard radiator going to "flip around" to the back to make it uniform with the port?
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576 feet away:
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I wonder: On the last mission in 2010, do you think the Soyuz crew will undock and do a flyaround of the completed station with the docked Shuttle in the image, like they did for Mir/Atlantis on STS-71?
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Why are the arrays 180 degrees out of sync, shouldn't the radiator be behind the array for maximum cooling in the shadow of the array?
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up above
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Loss of KU. :angry:
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cookiejar500 - 19/6/2007 5:23 PM
Why are the arrays 180 degrees out of sync, shouldn't the radiator be behind the array for maximum cooling in the shadow of the array?
Uninformed here, but this is why i THINK it is:
The arrays are in feather mode, i.e. they are not tracking the sun. By opposing them you usually have at least 1 of the arrays catching sunlight, thus not missing too much power.
Anyone wanting to correct me; you're more than welcome. ;)
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ISS is maneuvering for its attitude back.
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ISS maneuvering.
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View from ISS
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Colds7ream - 19/6/2007 8:23 AM
I wonder: On the last mission in 2010, do you think the Soyuz crew will undock and do a flyaround of the completed station with the docked Shuttle in the image, like they did for Mir/Atlantis on STS-71?
Whether they plan on it or not, they should.....
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Occasional short thruster puffs visible, too.
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Loss of KU is to be expected as Atlantis is up side down over on top of the ISS with its KU antenna facing towards the earth not the TDRS satellite above, we now have KU through the station watching Atlantis, and S-Band video stills from Atlantis.
Richard
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Very LUCKY snap!
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21 minutes left of comm through TDRS-East before the ZOE for both ISS and shuttle. Sunset on this pass is 24 minutes away. Atlantis is flying downward and behind the ISS right now.
Richard
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Look at that...
The shuttle's size is also quite noticeable now.
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Amazing imagary. Thank you.
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Glad you like it!
Very nice photo of Atlantis getting darker!
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10 minutes to the ZOE, 14 minutes to sunset on this pass, passing over central Europe right now.
Richard
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I simply can not get enough of this wonderful video from the ISS, and from NASA!
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A microphone in space, attached to the outside of the ISS?
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I agree, it's absolutely spectacular.
Will they have any high-res stills taken during the flyaround?
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Ford Mustang - 19/6/2007 5:45 PM
A microphone in space, attached to the outside of the ISS?
It's a UHF antenna mounted on the Destiny Lab.
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Ford Mustang - 19/6/2007 5:45 PM
A microphone in space, attached to the outside of the ISS?
Shit, you're too fast, just wanted to ask, too ;-)
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One of the EVA comm antennas on top of Destiny.
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Thanks for the answer, guys. I was like.. 'What the heck is a microphone in space, nonetheless outside the ISS, doing?
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Hey, you see the space-worm?
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Plenty of Hi Res imagery will be taken - that's the purpose of the fly-around - ISS Survey..
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I just saw two UFOs in the docking port camera ;)
...and the third one ;) What are they?
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Ice?
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Yes, and the flashing UFO :)
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Ah, the good old ice aliens. :)
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pippin - 19/6/2007 5:48 PM
Hey, you see the space-worm?
two of 'em ;-)
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What was that?
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You're going to miss this in 2010 onwards.
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I got a few snaps of it, not sure which will actually turn out good:
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Sorry if I missed this discussion, but why do the radiators on S4 and P4 point in opposite directions?
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as much as it's floating around I would guess it's inside the airlock
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Now, was that a very big thing gently floating past ISS, or a very small thing (dust or so) in the shuttle docking adapter that just got loose?
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Controllers noting several objects observed between ISS and Shuttle (untagged) - waiting for more.
Visiable on the TV. No one is noting what they are yet, but likely ice I'd guess.
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Reminded me of Dr. Frank Pool in 2001... HAL get the pod ready for launch...
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Another chunk of ice.. and bigger?
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I'm sure they're busy snapping away for ID purposes.
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Some of those bio experiments on ISS got out of control?
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They point in different directions as they are fixed to the P4 and S4 array truss after the SARJ joint and the when the SARJ joint turns to track the sun, the arrays and the attached radiators will turn too, this is normal.
Richard
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Looked to be from aft. Different speeds and directions.
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OK stupid question but I have to ask now, does only one side of the array generate power and the side with the radiator does not?
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That "space worm" looked as if it went behind the ISS. I guess that's not very likely as it would then be several (as in at least more than one) meters long...
It also loked flexible, but that might have been due to its shape and rotation.
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MKremer - 19/6/2007 4:56 PM
Looked to be from aft. Different speeds and directions.
Yeah. Anyone seen this before at this stage of the flight? Thinking it must be ice from RCS.
ISIS-LCS noting it, nothing more than they've observed it.
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I'm sure JimO can help out here, but I would guess the slowly drifting things in the foreground were ice or other debris. The rapidly flashing lights moving from left to upper right might have been satellites passing overhead?
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rfoshaug - 19/6/2007 8:50 AM
Ah, the good old ice aliens. :)
One of them must have been rotating in the way it reflected sunlight.... Made me wonder for a second how a passenger plane could get that high with its flashing winglights :-)
Nevertheless, guarantee this is on YouTube with the heading flashing alien craft near ISS.
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sts1canada - 19/6/2007 9:54 AM
they are fixed to the P4 and S4 array truss after the SARJ joint
Richard
Of course, I guess I would have expected them both to be on the opposite side of the SAW's than the sun so as they are more shaded and therefore more effective at rejecting heat. Instead one is like I described and the other will always be in the sun.
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cookiejar500 - 19/6/2007 5:56 PM
OK stupid question but I have to ask now, does only one side of the array generate power and the side with the radiator does not?
Nope. Both sides generate power.
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Flightstar - 19/6/2007 8:50 AM
You're going to miss this in 2010 onwards.
I figure Soyuz, Dragon, RPK ad Orion could get similar shots.....
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rfoshaug - 19/6/2007 5:56 PM That "space worm" looked as if it went behind the ISS. I guess that's not very likely as it would then be several (as in at least more than one) meters long...
It also loked flexible, but that might have been due to its shape and rotation.
Nah, I think it looked like it because the station was overexposed. Looked like a string of fabric or something like it...
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Officially classed as an FOD. Requests for analysis may be forthcoming (this is off the loop we use on L2 - which is what the managers, controllers, techs and engineers etc "speak" on - well they type anyway).
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Wow. The fade to black at sunset is always amazing.
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correct, pretty much all Semi-conductor based Solar electric blankets have a sink, so only the active component side generates electricity. the tell-tail is the active component side is shinier than the back-side. there is often a glass or other translucent covering on the active side.
The radiators are designed to work by pointing away form the sun, so should be in the shadow of the collectors.
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Orbit night!!
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They timed the loop nicely with the sunrise and sunset.
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Did I say "Wow!"?
Oh yeah, and wow...
and wow....
Wow...
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Chris Bergin - 19/6/2007 11:00 AM
Officially classed as an FOD. Requests for analysis may be forthcoming (this is off the loop we use on L2 - which is what the managers, controllers, techs and engineers etc "speak" on - well they type anyway).
It's the cylons, I did warn you all ;)
Stunning pictures, thanks so much.
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700 ft seperation. At 2000 ft second seperation burn.
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Blade_Pride - 19/6/2007 5:01 PM
They timed the loop nicely with the sunrise and sunset.
They sure did! Great screenshots FordMustang :)
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Chris Bergin - 19/6/2007 11:00 AM
It's the cylons, I did warn you all ;)
It is.... and they have a plan.....
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Chris Bergin - 19/6/2007 11:03 AM
700 ft seperation. At 2000 ft second seperation burn.
And then stationkeeping at a 46 mile distance.
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Thanks a bunch, guys. I appreciate this a lot. Glad we (joint operation between all the people here, NASA web-stream, and a fast internet connection) could make your home (and archive) with the mission of STS-117 that much better!
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And then stationkeeping at a 46 mile distance.
46 statute or nautical?
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avitek - 19/6/2007 11:06 AM
And then stationkeeping at a 46 mile distance.
46 statute or nautical?
I'll admit I don't know. I was repeating what the NASA TV narrator said. But doesn't NASA generally use nautical miles?
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Job well done on the undock and flyaround, NASA!
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ApolloLee - 19/6/2007 5:58 PM
Flightstar - 19/6/2007 8:50 AM
You're going to miss this in 2010 onwards.
I figure Soyuz, Dragon, RPK ad Orion could get similar shots.....
Soyuz seldom does. Dragon and RPK? If they ever leave the drawing board. Orion? Well, lets wait 8 or 9 years :(
Great pictures. They show what has been done. This is truly an achievement. But many will lament we are going in circles, in LEO. I don't.
Analyst
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Sep burn done.
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Good sep burn reported.
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There are notes that the flyaround used more RCS prop than expected. It's been evaluated.
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After the burn, which is done, Atlantis now moving away at:
3.1 nautical miles
2.7 statute miles
PER ORBIT.
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So roughly 1.75 mph :)
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Seems one of the laptops was giving Swanny some issues, but he's fixed it.
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The Ground is ready for RMS powerup.
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On to late inspections...RMS powerup in work.
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Chris Bergin - 19/6/2007 5:30 PM
There are notes that the flyaround used more RCS prop than expected. It's been evaluated.
Sounds remarkably similar to the Atlantis/ISS station keeping prop useage. Do they have a leak?
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ETEE - 19/6/2007 5:49 PM
Chris Bergin - 19/6/2007 5:30 PM
There are notes that the flyaround used more RCS prop than expected. It's been evaluated.
Sounds remarkably similar to the Atlantis/ISS station keeping prop useage. Do they have a leak?
If they have it must be a slow leak... I'd expect any major leak to trip a Master Caution alarm.
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Fuel leaks leave tell-tale signs of thruster cooling signatures - so if anyone hears mention of that signature - that will be a big clue... Slow leaks also create 'slugs' of un-burned prop, so firing a thruster will dislodge that sort of thing as well causing FOD..
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Chris Bergin - 19/6/2007 10:01 AM
A little off, but well within centerline requirements (manual control too).
That's how Bru trained. He likes to "hug" the bottom of the corridor. It provides a slight boost in opening rate so he spends less time separating along the Vbar. Also, since the orbiter will tend to drift up if he goes hands-off, it gives more reaction time in the event of a systems failure.
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Jorge - 19/6/2007 6:11 PM
Chris Bergin - 19/6/2007 10:01 AM
A little off, but well within centerline requirements (manual control too).
That's how Bru trained. He likes to "hug" the bottom of the corridor. It provides a slight boost in opening rate so he spends less time separating along the Vbar. Also, since the orbiter will tend to drift up if he goes hands-off, it gives more reaction time in the event of a systems failure.
Thanks Jorge! I was working off a previous undocking image (the same as the one used) with the "little off" comment, but that explains it very well.
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That view of the station looks like an Empire fighter approaching from the rear. :)
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I was just thinking the same thing :)
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Look out Atlantis, there is a TIE fighter on your six! I wish I could take a screen cap :)
Edit: Great minds, or indiffering fools? :D
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Three!
Was about to post, "That's not a space station!" :laugh:
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That's not a moon...... it's a space station....
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nacnud - 19/6/2007 6:19 PM
Look out Atlantis, there is a TIE fighter on your six! I wish I could take a screen cap :)
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JRThro - 19/6/2007 11:10 AM
avitek - 19/6/2007 11:06 AM
And then stationkeeping at a 46 mile distance.
46 statute or nautical?
I'll admit I don't know. I was repeating what the NASA TV narrator said. But doesn't NASA generally use nautical miles?
Internally. PAO usually converts to statute miles for NASA TV.
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Amazing shot, sums up the success of the STS-117 - Exp. 15 mission!
Sorry Chris, I did not know that you posted the same shot.
Richard
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Why do I keep hearing "Stay on target" in my head....
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How far are they from the station right now?
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MCC: Stabilize your rear deflectors... Watch for enemy fighters.
CJ: They're coming in! Three marks and 2-10! It's no good down here, I can't maneuver!
MCC: Stay on target.
CJ: *We're too close!*
MCC: Stay on target!
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Chris Bergin - 19/6/2007 1:24 PM
MCC: Stabilize your rear deflectors... Watch for enemy fighters.
CJ: They're coming in! Three marks and 2-10! It's no good down here, I can't maneuver!
MCC: Stay on target.
CJ: *We're too close!*
MCC: Stay on target!
You guys are all showing your age :)
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Good job Atlantis has that RMS gun.
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Reagan's Star Wars and Space Station Freedom programs finally come together.
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The distance is approx. 1 mile or 2, this is a rough estimate, there will be another sep burn this evening Eastern time when the distance reaches 45 - 50 miles away to station keep with the ISS at that distance while the post-docking OBSS scans that are done this afternoon are analyzed on the ground. They are station keeping at that distance so they could return to the ISS if an unforeseen problem is found and CSCS is called otherwise per the nomal plan they will drift further apart.
Richard
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cookiejar500 - 19/6/2007 10:17 AM That view of the station looks like an Empire fighter approaching from the rear. :)
TIE Fighter. :bleh:
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Guess I need to break out the DVD tonight :)
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Stunning coverage guys.
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It has been such an exciting mission to watch. Thanks for that excellent coverage you are making here.
Greetings from Bulgaria ;) May the Force be with you all! :>
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Some video of the undocked flyaround from the ISS:
I'd post more pictures, but.. They're all like picture 2. Just the Sun and the Earth. Atlantis is in there somewhere!
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This mission has now seen cylons and TIE fighters, one can only expect a tribble or two to show up during these OBSS surveys.
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Computer graphic of the Robotic Arm moving:
Live video!
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This marks the start of late inspections, once the RMS has picked up the OBSS.
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Sunrise!
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leetdan - 19/6/2007 1:56 PM
This mission has now seen cylons and TIE fighters, one can only expect a tribble or two to show up during these OBSS surveys.
DANGER, Clay Anderson!
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Loss of KU
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Standing by for the pick up of everyone's favorite on orbit sensor package...and here we go:
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About 30 minutes down on the timeline, but here's the plan (I've changed the times to reflect the 30 minutes difference - they may gain some of it back):
Central times:
Unberth OBSS 13:28
Starboard Wing 2:13
Nose Cap 3:28
Port Wing 4:18
OBSS Berth 5:48
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I cannot get over how huge the ISS looks now. This is the stuff of Sci Fi come to reality.
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Waiting for the start of inspections on the wings.
Atlantis heading over Blighty...
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And we're finally going with starboard wing scanning.
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I know what you're thinking...seen one RCC panel, seen 'em all.
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1 of 7 completed
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Has there been any comments about giving those spots on the leading edge where they thought there might have been an impact (Day 3 or Day 4?) some extra attention, or is this just going to be the standard scan?
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rsnellenberger - 19/6/2007 8:32 PM
Has there been any comments about giving those spots on the leading edge where they thought there might have been an impact (Day 3 or Day 4?) some extra attention, or is this just going to be the standard scan?
Yeah, all WLEDS (Wing Leading Edge Dectection System) "hits" are logged and they get to have a better look during this, but as mentioned at the time, the "hits" were so small they might of not even been "hits". It's such a sensitive system that a lot of things can set it off.
The max we saw over the mission was 1.5g and that's really nothing.
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Five hours since undocking. Nearly completed step 2 of 7 for Starboard wing OBSS scanning.
Some video has been downlinked off the ISS from Atlantis which will be replayed at the top of the hour.
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PAO's forgotten to mention it, but we're coming up to the end of step 3 of 7 for starboard wing:
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Looks like they've found something of interesting. Asking for a photograph.
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On to step 4 of 7
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Why are some of the areas very dark?
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Did anyone catch that scrape on the RCC? Just saw it on the OBSS camera.
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Super George - 19/6/2007 8:46 PM
Looks like they've found something of interesting. Asking for a photograph.
They do that mostly at the end of each run. Nothing to worry about when that's requested.
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Shuttle Scapegoat - 19/6/2007 8:47 PM
Why are some of the areas very dark?
New tiles (which replace any older tiles that may of been slighty damaged) added to the TPS during post flight/pre-flight processing. They are actually tougher tiles than the previous. You can spot them all over the orbiter's belly as the dark spots.
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Chris Bergin - 19/6/2007 12:48 PM
Super George - 19/6/2007 8:46 PM
Looks like they've found something of interesting. Asking for a photograph.
They do that mostly at the end of each run. Nothing to worry about when that's requested.
Hope ABCNews doesn't hear of this or they'll report the shuttle is in peril....
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There's another mark. Looks like the birds got her! ;)
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Ford Mustang - 19/6/2007 6:33 PM
After the burn, which is done, Atlantis now moving away at:
3.1 nautical miles
2.7 statute miles
PER ORBIT.
It must be vice versa - 2.7 nautical miles, 3.1 statute miles, as nautical mile is longer!
2.7 nm = 5.0 km
3.1 st.mi = 5.0 km (bot rounded to the one decimal place)
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There were some issues with digital video on the WLE Scans after Launch.. Has that been corrected? The scans we're seeing now look much more like what we've seen as nominal on other flights for both post-ascent and MMOD checks..
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Coming up: pictures from Atlantis' payload bay, looking at the ISS as it undocked and drifted away
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There's the Tie Fighter replay. Hopefully George Lucas will use it when he makes the next set of Star Wars films. There's a fundraising idea for NASA :)
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And this is the last picture. Short replay!
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Ford Mustang - 19/6/2007 4:02 PM
And this is the last picture. Short replay!
Is that a pulse cannon getting ready to shoot the Tie Fighter? :)
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Orbit 2 team is now in control.
Expedition 15 crew is now settling into the expected routine.
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Nice shot off the ISS.. Not sure if it's a loss of KU on the Shuttle, or if they are moving to the nosecap section of the survey.
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Able to see a nice graphic of what is going on with the shuttle from the control room:
Looks like it's a loss of KU! :(
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We have KU back!
EDIT: We have a go for nosecap altitude maneuver!
EDIT2: Great shot of the radiator!
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Great payload shots!
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Ford Mustang - 19/6/2007 10:27 PM
EDIT2: Great shot of the Payload Bay Door!
That's one of the radiator panels.
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Wonderful shot moving to the docking port and the crew cabin!
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I have just seen ISS + Atlantis fly over, it was INCREDIBLE :)
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Nosecap survey underway!
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Now under loss of COMM.
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Chris Bergin - 19/6/2007 2:34 PM
rsnellenberger - 19/6/2007 8:32 PM
Has there been any comments about giving those spots on the leading edge where they thought there might have been an impact (Day 3 or Day 4?) some extra attention, or is this just going to be the standard scan?
Yeah, all WLEDS (Wing Leading Edge Dectection System) "hits" are logged and they get to have a better look during this, but as mentioned at the time, the "hits" were so small they might of not even been "hits". It's such a sensitive system that a lot of things can set it off.
The max we saw over the mission was 1.5g and that's really nothing.
Be careful here -- as explained in those pressers, although 10 G's is the destructive force as measured in ground tests of objects impacting during relative velocities typical of launch phase, the official was commendably open-minded in pointing out that we DON'T know the 'G' signature of a dangerous impact at orbital speeds, characteristic of MMOD. Since they are so much faster, they can traverse the structure -- or more likely, vaporize -- in such a brief interval that the time-averaged 'G' picked up on a sensor could be very much lower -- and neighboring sensors might detect nothing. Historically, such past 'detections' have NOT been followed by visual in-flight or close-up post-flight detection of ANY damage, hence no impact was required to trigger those 'hit' signals. But treat these categories logically -- if there exists a phenemonon ("pseudo-impacts") that triggers low 'G' signals, it is NOT logical to conclude that ALL low 'G' signals are caused ONLY by that harmless phenomenon (especially since the on-orbit signature of a hypothesized damaging MMOD impact is NOT known).
Har-UMPH. :angry:
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1: Computer Graphic of what's going on, due to LOSS of COMM and LOS.
2: Party at the ISS control room!
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Covault (AWST) has filed a story on the debris during separation. Most was small and typical, but "one piece appeared as large as an ironing board and was flapping, indicating it was cloth-like in nature." Has anybody got any better images, as well as the exact time of that sighting?
I've been passionate about spacecraft-generated debris for many years, and the very first ISS simulation, back about 1997, I scripted an object seen out the window -- it was scripted to be a fist-sized hunk of ice off a radiator leak -- and the crew (and Mission Control) were supposed to say -- "I wonder which direction it is going away," to determine if it might be coming BACK. Instead they oohed and aahed and said "look at that" a lot... but they learned, later.
There's been spacecraft-generated debris since there's been human spacecraft (John Glenn's 'fireflies', for starters), and -- yes :frown: -- there have been UFO buffs who adopted (and creatively adapted) those tales as alien visitors :laugh: and still do. But they also maintain a far more complete archive of crew and TV visual signtings of 'stuff' outside the spacecraft than NASA has ever bothered to do -- so I visited those sites a lot, even to the point of getting reprimanded for misuse of office computers one time :bleh: !!
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MSB coming up!
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There's the Tie Fighter comment at the Press Briefing!
"We'd rather have a Tie Fighter than an Imperial Cruiser back there!"
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Some undocking video we didn't see!
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Great shot. :)
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Tomorrow's agenda:
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The object that was 'falling' away from the ISS during undock:
Off the ISS or the Station. Image specialists just getting in. If it was off orbiter, it was small. If it was from the ISS, then it was large.
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OK... there's your moronic question of the day... Did he just ask if the camera was on the station that shot the debris?
Sure.... It happened to see itself or look into a really big mirror....
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Good video of what I missed during undock:
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It's the space worm!
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while ive been watching ....
from 3 frames..
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Very nice, JJ.. Seems my images are good for something!
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Big concentration in media questions on the "wormy" debris.
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ApolloLee - 19/6/2007 5:29 PM
Big concentration in media questions on the "wormy" debris.
Seems like she was getting 'frustrated' near the end.. :laugh:
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Object spotted coming up from the payload bay.
Loose blankets I believe we just heard?
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Ford Mustang - 19/6/2007 10:30 PM
ApolloLee - 19/6/2007 5:29 PM
Big concentration in media questions on the "wormy" debris.
Seems like she was getting 'frustrated' near the end.. :laugh:
Cathy did well there to push home the point that they are still working it via imagary people.
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I can confirm that is what I heard too, Chris!
Yes, she did push the point that they did not know, but she did seem frustrated. :x
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Chris Bergin - 19/6/2007 11:30 PM
Object spotted coming up from the payload bay.
Loose blankets I believe we just heard?
Will be in the FD higlights video from the crew made by CJ.
This one turns out to be another STS-115. Instead of being spotted by the INCO during routine Earth observations after the FCS checkout, this was spotted during undocking.
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ApolloLee - 19/6/2007 11:29 PM
Big concentration in media questions on the "wormy" debris.
Off curse, when the station not fall down becurse the computer problem the media most find a new "dome day" story.
Really fanny Q from Mike (?) about from which spacecraft the "worm" was seen. ;)
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Go to proceed with scan. In attitude, good picture:
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Ford Mustang - 19/6/2007 11:38 PM
Go to proceed with scan. In altitude, good picture:
It's attitude, not altitude. Altitude is height, attitude is orientation.
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Sorry, Dave. A typo.
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DaveS - 19/6/2007 4:45 PM
Ford Mustang - 19/6/2007 11:38 PM
Go to proceed with scan. In altitude, good picture:
It's attitude, not altitude. Altitude is height, attitude is orientation.
And a ba-a-a-a-ad attitude is when you are facing the wrong direction.
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You can see a main engine from this shot of the wing leading edge.
Edit: Heading into Orbit Night.
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Trivia time with Clay!
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I hope John 44 is recording this. Quiz time with Clay.
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Chris Bergin - 19/6/2007 4:16 PM
I hope John 44 is recording this. Quiz time with Clay.
When is John44 not recording NasaTV? :laugh:
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I would have recorded it if I knew how!
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Live video!
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OBSS element of late inspections now completed.
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Sunrise!
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Ahh! I'm blind! :laugh:
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OBSS moving into 'hover' position.
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http://forum.nasaspaceflight.com/forums/get-attachment-big.asp?action=view&attachmentid=24647
Is it me or does there seem to be something missing in the bottom right hand corner of this shot
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madmardy - 19/6/2007 11:56 PM
http://forum.nasaspaceflight.com/forums/get-attachment-big.asp?action=view&attachmentid=24647
Is it me or does there seem to be something missing in the bottom right hand corner of this shot
Hard to know. It could be just attach areas for the truss. Then again, it could be where they saw something leaving the payload bay.
At the same time, I know checking these inspection images from the NASA TV feed is nothing like what they'll get back on the ground. I know a few of us turned into babbling fools from thinking we were seeing things out of place during earlier missions :)
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They aren't getting the four latch lights to stay on, so 10 degrees back up and then back down again.
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And that worked. Nicely latched.
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One hour until the NC5 burn, at one foot per second.
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End effector has released the FWD grapple fixture.
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This is a beautiful shot of the ISS in the distance as the shuttle and ISS following each other into a night pass!
Richard
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Orbit Night. Seems I missed the sequence due to STSPLUS being 5 minutes behind.
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Bringing the Canada Arm down into latch.
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ISS undocking photos: http://spaceflight.nasa.gov/gallery/images/shuttle/sts-117/ndxpage29.html
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Ford, your times will be slightly off today because of the different orbital burns the shuttle is performing today after undocking. The elements on the web are only updated once or twice a day and the orbiter has made some burns today since these elements were released that have changed the orbital information slightly. Don't worry, this lag is normal, tomorrow's elements should provide more accurate results as the shuttle will not be performing many burns tomorrow (other than the RCS hotfire test to check out the RCS jets). Make sure your computer's date and time is as accurate as possible, a small lag in the time displayed in the STSPLUS program is normal as it is a DOS program running inside WINDOWS and it has to share the brain of the computer (CPU) to do its work.
Back on topic and talking about orbital burns, we are expecting to have another small burn by the orbiter within the next hour called NC 5, this burn is to increase Atlantis' departure from ISS by 4.5 statue miles per orbit.
Richard
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Thanks, Richard. I just went to the world clock and made sure it was accurate, and I got it to the SECOND!
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DaveS - 19/6/2007 7:44 PM
ISS undocking photos: http://spaceflight.nasa.gov/gallery/images/shuttle/sts-117/ndxpage29.html
I'm Confused!!! I don't know which one to put on my computer desktop!!!! They are all great!! ahhhh
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Burn in progress.
Edit: Good burn!
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Chris Bergin - 20/6/2007 12:26 AM
One hour until the NC5 burn, at one foot per second.
And that burn is complete.
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Crew Mini DV Highlights. Pictures on the next page.
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Awesome crew highlights video. Love the closeups of the CRT displays and RPOP laptops. Seeing the ISS thru the COAS. Makes me feel like I was there!
What's so funny about the cabin temp controller? They're busting up laughing!!
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j2_ - 20/6/2007 2:22 AM
Awesome crew highlights video. Love the closeups of the CRT displays and RPOP laptops. Seeing the ISS thru the COAS. Makes me feel like I was there!
Best one ever. Great info on orbiter flying. Explaining Vbar and Rbar. Ford's getting screenshots, but the video is required viewing (when John 44 publishes it). Loving this one.
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Pictures coming AFTER the video.
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This is great!
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Did anyone quite get the joke about the valve moving?
--Michael
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hehe...fun with dental floss. :)
--Michael
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Chris Bergin - 19/6/2007 6:25 PM
Best one ever. Great info on orbiter flying. Explaining Vbar and Rbar. Ford's getting screenshots, but the video is required viewing (when John 44 publishes it). Loving this one.
I love all the PLT/CDR type info.
Hopefully MKirk or Jorge will give us some insight on some of the stuff CJ was talking about. Spec 21 ops, and reselecting jets in case of DPS failure!
Time to dig out the DPS manual and read up on what SPEC 21 is used for!
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Sounds like the "worm" came from the shuttle payload bay!
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Close to 60 or 70 photos, gotta decipher which to post!
Edit: Undocking from inside the orbiter!
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mdrapp - 20/6/2007 2:27 AM
Did anyone quite get the joke about the valve moving?
--Michael
Some joke with the cabin temp control. Looks like they were winding one of the crew up.
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j2_ - 20/6/2007 2:32 AM
Sounds like the "worm" came from the shuttle payload bay!
Na, that was a seperate event. The worm was after undocking. The "space spider" was a washer fitting from the payload bay a number of hours later.
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Pic 1: Drifting away from the ISS. Looking at the docking module on the ISS
Pic 2: Projected V-Bar course around the shuttle
Pic 3: Instructed to take pictures of the ISS, while drifting away
Pic 4: Watching the ISS, using the RMS to take further pictures
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Pic 1: During the Flyaround of the ISS, the green (solid) line is where they are, dotted is projected
Pic 2: Suni waving at the camera. Getting a bit emotional, leaving her 6 month stay at the ISS
Pic 3: Watching the ISS float away, realizing she's going home
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Pic 1: Main computer on Atlantis, showing the current position of Atlantis
Pic 2: Still using the RMS to grab closeup shots of the ISS
Pic 3: Three quarters of the way done with the flyaround, that program came in handy
Pic 4: Manual (primary) way to make sure the positioning of Atlantis is correct
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Pic 1: Having to use high-resolution lenses on the Camera to get closer pictures when far away
Pic 2: 4/5ths done with the flyaround, this program is used frequently during the flyaround
Pic 3: Flyaround complete!
Pic 4: Looking at the ISS from the crew quarters on the orbiter, next to the tail
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Pic 1: Playing with tapes. Danny taped the tapes so they would come back in an orderly fashion
Pic 2: Microgravity is great
Pic 3: You can do anything in microgravity... Things just keep going!
Pic 4: Fun, fun, fun!
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Pic 1: Getting ready to grapple the OBSS
Pic 2: Pat Forrester watching out the window, making sure the OBSS is on course
Pic 3: Probably making sure settings are correct on the panel
Pic 4: What's next? We'll just look in the book!
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Pic 1: Jim Reilly is [what seems to be] working on a computer
Pic 2: Suni getting ready for re-entry and gravity for the first time in 6 months
Pic 3: Danny playing with his juice.. Didn't his mom tell him not to? :laugh:
Pic 4: Looks like.. jello! Playing with juice and dental floss
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Pic 1: 3...
Pic 2: 2...
Pic 3: 1...
Pic 4: CONTACT!
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Pic 1: An.. almost perfect.. marble shape juice ball!
Pic 2: Lifesaver in a water-ball
Pic 3: Looks strangely like an eye-ball!
Pic 4: Good catch, Suni! There's some water floating around, still.. get it!
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Pic 1: Far away picture of the ISS. Around 9 miles away
Pic 2: Steve Swanson going over a checklist, making sure things are going as planned
Pic 3: Danny O looking out the window at Earth, making sure the surveys are going good
Pic 4: Another program that is essential to surveys in space
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Pic 1: Pat looking out the aft window, into the payload bay
Pic 2: Sequential pictures of the 'payload' spider
Pic 3: Just a loose washer that held blankets in the payload bay
Pic 4: Sequential photos sent to the ground for further inspection
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Pic 1: Danny O looking out the window, making sure the OBSS is on track to a good berthing
Pic 2: The OBSS is berth'd for a final time!
Pic 3: Danny O making sure the OBSS is berth'd, and moving the RMS to its proper position
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Pic 1: Praise given to the 117 crew for the fantastic highlights
Pic 2: Orbit 2 director says goodbye, as he is going to watch the weather for landing
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Any chance someone has a capture of the video?
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USFJoseph - 20/6/2007 3:08 AM
Any chance someone has a capture of the video?
http://forum.nasaspaceflight.com/forums/thread-view.asp?tid=6651&start=76&posts=77 - in about three/four hours I reckon.
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Amazing pass over my house just now, nearly as bright as Venus... what a view!
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Another wonderful pass tonight = 10:30 EST from southern Ontario. Saw two beautiful bright lights following each other in a nice straight line. They seemed to be about 2 - 3 seconds apart (the only useful distance measurement I have.... ie it took the shuttle about 2 -3 seconds to reach the same point in the sky as the station did). Best and last decent pass for a while. From my perspective the station opp's start to get worse and then pick up again in mid july.
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Stockman, I'm in wyandotte across from Amherstberg - was that a beauty or what? :)
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Strange, the tracking map on NASA TV shows the shuttle thousands of miles ahead of the ISS. Actually it is only about 10 miles...I just saw them both flying over Charlottesville, Va. Very bright in between clouds.
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backspace - 19/6/2007 10:40 PM
Stockman, I'm in wyandotte across from Amherstberg - was that a beauty or what? :)
It was fantastic. I had to struggle with it through broken clouds but there was enough clear sky to follow it for quite a while. Nice and bright and watching the two of them move in tandem really was impressive. I am in souther ontario along the southern shore of Lake ontario.
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Beautiful overhead pass (25 deg above horizon) in central Illinois, station and shuttle in formation, station leading by an apparent 5 deg, and the station was about twice as bright.
Wow, what a sight. If you're lucky enough to have the opportunity, it's worth it!
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I just saw it, for the first time. I screamed. I woke up two people! About 90 degrees in the sky.. I can't believe that fact, either! WONDERFUL!
Looked to be mere feet away from the other.. But it was MILES! Wow! I can't believe they were miles apart!
I'll remember this for the REST of my life!
P.S. I'm shaking right now. That was GREAT!
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Just saw ISS and Atlantis pass overhead. Super bright and lasted longer in the sky than predicted by NASA. Question:
At this point after undocking, which spacecraft would appear to be "in the lead?"
The reason I ask is that right on schedule the ISS appeared. Following it was a dimmer speck... Atlantis! I'd forgotten that I might be able to see Atlantis, so it was a real bonus (can you tell I'm excited?)!
So I assumed that the brighter was ISS and the dimmer was Atlantis, but then I saw Atlantis flash... really really brightly. Definitely the brightest thing in the sky by far for just a fraction of a second. I know ISS flashes due to her solar arrays, but Atlantis?
I guess I've just never seen anything like it before. I wondered if it was an engine firing, but I know they should be getting to bed by now (plus, I'd not heard of any planned engine firings).
Ok... I'll settle down now. But any thoughts about what I may have seen? Just a random reflection off the radiators or something?
EDIT :: As I was typing, all these other guys saw it too. I'm glad. Anyone see the flash? Bright as day here in St. Louis (literally!)
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The shuttle should be leading the ISS, since it is in a lower and faster orbit.
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From the pictures, it looks like the shuttle would be in front (the crew highlights).. And off of the NASA TV World Map view. Not positive, but I think that Atlantis is in front.
Edit: Yes, I saw.. two.. flashes. Not sure if one was lightning or not, but.. I did see one coming from the ISS and Atlantis pair.
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ISS should be ahead.
Nope, you're right - Atlantis is ahead.
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City lights from the Payload bay of Atlantis!
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Nighttime Earth views. City lights currently, lots of lightning earlier.
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Here's 'proof' that Atlantis is ahead of the ISS:
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Ford Mustang - 19/6/2007 9:54 PM
City lights from the Payload bay of Atlantis!
Must have been the Rio area, just passing the coast of Brazil.
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Yes, except that picture is totally incorrect as to the relative distance. They are almost on top of each other (10-20 miles), with Atlantis leading.
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I'm opting out on posting FD12 highlights, as we have the whole thread here. Just wanted to post the 'slate' coming up to the highlights, as this is the next major 'event' until crew wakeup and FD13.
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FD 12 Highlights now on NASA TV.
(they'll be repeating this and the crew video throughout the night)
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I just had a quick look ahead. I was a bit wrong in my previous post. For the next two nights (from my perspective) around the 9:17 and 9:40 pm time frame EST. Each night there will be a good high azimuth pass lasting about 7 minutes.... Lets hope for clear skies the next two nights and maybe we will have another chance to see both Shuttle and Station following each other.
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If I can get this to work..
I took pictures of the Shuttle and ISS passing over Mid Michigan tonight about 10:34.
Atlantis in Lower right leading? surprised it looks that much brigher than ISS .
Even my 15 and 13 year old kids were impressed.. now they want to go watch a shuttle launch!
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Sort of thing that should go on the "Sightings" thread, but that's way too cool to move. Thanks for sharing! :)
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Your picture, Art, is what I saw too. So it makes sense that the trailing "star" is ISS due to the flash I saw (a known phenomenon), but...
Atlantis is brighter? I'm bamboozled by that too.
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Atlantis is 10-20 miles lower, if what I hear is correct, than the ISS, thus, brighter (bigger).
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Atlantis has the upper 'white' side facing Earth, plus the silver radiators on the open PB doors.
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Ford Mustang - 19/6/2007 10:20 PM
Atlantis is 10-20 miles lower, if what I hear is correct, than the ISS, thus, brighter (bigger).
Ahh. Ok. Thanks, Steven... that makes sense. And thanks for your coverage today too! I had to miss the whole thing, so when I got back from work I got a great overview of the flight day.
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Now that folks have pointed out that Atlantis is leading, I went back to Heavens-Above, and sure enough, it lists the ISS as having an apparent brightness of 0.9 at my location, and STS-117's brightness as 0.4. I'd have to say they hit it pretty close to right on.
Thanks to all for the clarification. I've got another brief viewing opportunity in 30 minutes, with both of them passing right next to a crecsent moon. Time to set up the camera!
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Chris Bergin - 19/6/2007 11:18 PM
Sort of thing that should go on the "Sightings" thread, but that's way too cool to move. Thanks for sharing! :)
Thanks for letting me share! :) I'm happy I was able to contribute something back. I've enjoyed the discussions and info on this website immensely since finding it a few months back. Keep up the great work!
This was the first time I've sighted ISS and the Shuttle.. Seeing the sighting comments from everybody else the last few days really tweaked my interest.
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Caught a few more good snaps of Suni going in for the lifesaver water-ball thing:
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They were all still really laughing mentioning the cabin heating control valve when talking with Capcom after the video.
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j2_ - 19/6/2007 8:29 PM
Chris Bergin - 19/6/2007 6:25 PM
Best one ever. Great info on orbiter flying. Explaining Vbar and Rbar. Ford's getting screenshots, but the video is required viewing (when John 44 publishes it). Loving this one.
I love all the PLT/CDR type info.
Hopefully MKirk or Jorge will give us some insight on some of the stuff CJ was talking about. Spec 21 ops, and reselecting jets in case of DPS failure!
Time to dig out the DPS manual and read up on what SPEC 21 is used for!
I didn't see the video the first time so had to wait until they started replaying it.
SPEC 21 - The normal Group B powerdown has the crew take IMU 2 to standby in order to conserve power. During the Group B powerup, prior to undocking, the crew recovers the IMU by sending the Operate command, then aligning IMU 2 to either IMU 1 or 3. This is all done with entries to SPEC 21, the IMU ALIGN display (it's actually not a DPS display...).
Reselecting jets - You may have noticed, looking at pictures of ISS, that the PV radiator on the P6 truss extends forward of PMA2. From the orbiter's perspective, the radiator hangs down in front of the nose, directly in the plume flowfield from the forward firing RCS jets. There are three such jets, and the Digital Autopilot (DAP) normally fires two of them at a time. This puts high plume loads on the radiator, because two RCS jets firing close together have overlapping flowfields that creates a "shock plane" where the fields intersect, greatly amplifying the dynamic pressure. To reduce loads during final approach and right after undocking, procedures call for the crew to deselect two of the three jets, to force the DAP to fire just one at a time. If that last jet were to fail, the orbiter would lose translation capability in that axis. In that event, the crew has trained to quickly reselect one of the other jets. There are other failures besides a straight jet failure that could cause that jet to become unavailable, such as DPS failures. So the crew must be primed to look for other signatures beyond just a jet fail message to determine that the jet is unavailable. This concern should go away after the P6 is relocated from Z1 to P5 on STS-120.
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Ford Mustang - 19/6/2007 8:37 PM
Pic 1: During the Flyaround of the ISS, the green (solid) line is where they are, dotted is projected
It's hard to tell in that picture, but the RPOP predictors are not really a dotted line, but the numbers 1-9, signifying where the orbiter will be at one-minute intervals out to nine minutes.
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lcs - 19/6/2007 9:51 PM
The shuttle should be leading the ISS, since it is in a lower and faster orbit.
Hmm, no.
The orbiter performed three burns to separate from ISS. SEP1 was a 1.5 fps radial up burn that put the orbiter above and behind ISS. SEP2 was a 1.0 fps posigrade burn that set the orbiter phasing further back behind ISS for Late Inspection (to protect possible re-rendezvous, which would be from behind). NC5, the last burn of the day, was another 1.0 fps posigrade burn that caused the orbiter to fall behind ISS faster. Atlantis' orbit is not much higher than ISS (about 1 nmi, but it is higher).
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Check out the amazing swirl patterns on the top arrays:
http://www.nasa.gov/images/content/180454main_s117e08011_hires.jpg
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Jorge - 20/6/2007 6:38 AM
lcs - 19/6/2007 9:51 PM
orbit is not much higher than ISS (about 1 nmi, but it is higher).
Then please explain how Atlantis can be higher than the ISS AND have moved in front of it
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ShuttleDiscovery - 20/6/2007 8:01 AM
Check out the amazing swirl patterns on the top arrays:
http://www.nasa.gov/images/content/180454main_s117e08011_hires.jpg
Those are virtual swirls! Caused by interference between the picture resolution and your display. View the picture at full size and the swirls aren't there!