Author Topic: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion  (Read 139722 times)

Offline gongora

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #80 on: 10/18/2017 04:47 PM »
Quote
Tweet from Jeff Foust
Hertz: cut reserves for TESS as part of belt-tightening. Schedules reserves are tight, but believe they’ll stay on track for March 18 launch

Offline Star One

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #81 on: 10/25/2017 04:59 PM »
NASA trims reserves and shifts schedules to find astrophysics cost savings

Quote
“It required us to find $27 million in savings out of our total budget” from other astrophysics programs, Hertz said. Those cuts were incorporated into an operating plan for fiscal year 2017 approved in early September, less than a month before the end of the fiscal year.

The program affected the most is the Transiting Exoplanet Survey Satellite (TESS), a mission to search for exoplanets that is nearing completion for launch next year. A $15 million cut came from deferring a launch payment to fiscal year 2018 and effectively eliminating the remaining budget reserves held at NASA Headquarters.

“There are no further headquarters-held reserves in TESS funding that the project has received to launch in March of 2018,” Hertz said. The progress the mission was making, with the spacecraft currently undergoing a series of tests, made him confident the mission could stick to that schedule.

“Their schedule reserves are tight, but they have schedule reserves and they can make it,” he said. Should TESS run into problems, he said, NASA would have to find cuts in other astrophysics programs to make up the difference, or not launch TESS at all.

http://spacenews.com/nasa-trims-reserves-and-shifts-schedules-to-find-astrophysics-cost-savings/

Online jebbo

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #82 on: 11/13/2017 06:17 PM »
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The @NASA_TESS successfully completed vibration testing @OrbitalATK! Vibration testing shakes the satellite to the real conditions that TESS will face during launch. It is vital to test the satellite to be sure it will survive the ride into orbit! https://t.co/5BQXwRexPa

https://twitter.com/NASA_TESS/status/930150903348375557

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Offline gongora

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #83 on: 11/13/2017 06:24 PM »
Quote
The @NASA_TESS successfully completed vibration testing @OrbitalATK! Vibration testing shakes the satellite to the real conditions that TESS will face during launch. It is vital to test the satellite to be sure it will survive the ride into orbit! https://t.co/5BQXwRexPa

https://twitter.com/NASA_TESS/status/930150903348375557

--- Tony

Attaching image from tweet.

Online jebbo

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #84 on: 11/15/2017 09:37 AM »
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@NASA_TESS Just conducting an MSPA (Mission Service Training activity) on #DSS24. This test validates ground systems using simulated TESS (Transiting Exoplanet Survey Satellite ) data. 125Mbit/s will be the DSN's fastest telemetry yet. Launch planned for next year.

https://twitter.com/nascom1/status/930640984794324992

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Offline ugordan

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #85 on: 11/15/2017 10:43 AM »
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125Mbit/s will be the DSN's fastest telemetry yet.

Nice!

Online AncientU

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #86 on: 11/15/2017 07:12 PM »
Quote
125Mbit/s will be the DSN's fastest telemetry yet.

Nice!

Not fast.
"If we shared everything [we are working on] people would think we are insane!"
-- SpaceX friend of mlindner

Online woods170

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #87 on: 11/16/2017 06:36 AM »
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125Mbit/s will be the DSN's fastest telemetry yet.

Nice!

Not fast.
Context is the keyword here. It is fast for DSN.

Offline shooter6947

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #88 on: 11/16/2017 03:36 PM »
Quote
125Mbit/s will be the DSN's fastest telemetry yet.

Nice!

Not fast.
Context is the keyword here. It is fast for DSN.

Seriously.  In what way is this not fast.  Galileo was 10bps, New Horizons maybe 1000bps.  125Mbps is astounding.  That's faster than my cable modem!

Offline LouScheffer

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #89 on: 11/16/2017 03:37 PM »
Quote
125Mbit/s will be the DSN's fastest telemetry yet.

Nice!

Not fast.
Historically, most space missions are X-band, and the total X-band bandwidth reserved for all near Earth missions combined is 50 MHz.  (See this Chart of Space Bands.)

So historically it is fast, and presumably is K band where the bandwidth is greater (as is Kepler, which was the previous record holder, I think...)

Online jebbo

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #90 on: 11/16/2017 03:51 PM »
So historically it is fast, and presumably is K band where the bandwidth is greater (as is Kepler, which was the previous record holder, I think...)

It's a Ka-transmitter from Space Micro

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #91 on: 11/18/2017 01:16 PM »
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Launching in 2018, @NASA's next exoplanet hunter @NASA_TESS will find thousands of new worlds around stars outside of our solar system. @MIT @NASAGoddard @TESSatMIT @OrbitalATK @MITLL https://t.co/E0TYHwJnQ7

https://twitter.com/NASA_TESS/status/931620883688550407

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Offline Seamus

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #92 on: 12/07/2017 11:19 PM »
Quote
Rep. Mo Brooks (R-Ala.) quizzed Zurbuchen about the status of TESS’ launch vehicle, the SpaceX Falcon 9. The Block 4 version of the rocket that will be used to launch TESS has yet to be certified by NASA for the mission, and Brooks asked if there were concerns that the rocket will not be certified in time.

“At this moment in time I don’t have any such concerns,” Zurbuchen said, anticipating the certification process would be completed by early 2018.

Block 4 for sure on TESS it would seem, found at the end of this article about JWST.

http://spacenews.com/independent-review-to-examine-jwst-launch-plans/

Online jebbo

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #93 on: 01/01/2018 06:21 AM »
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Happy New Year! In 2017, @NASA_TESS  completed integration and testing. We successfully finished thermal  vacuum testing in December. In 2018, we look forward to shipping the  spacecraft to @NASAKennedy and then launch! https://t.co/UGHxWIZwFl

https://twitter.com/NASA_TESS/status/947566244135399425

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Online jebbo

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #94 on: 01/09/2018 07:25 AM »
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[email protected]_TESS successfully completed vibration and environmental testing that mirrors the conditions that the observatory will face at launch and in space. After testing was completed, the #TESS cameras were checked and successfully passed!

https://twitter.com/NASA_TESS/status/950520468523704320

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Offline gongora

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #95 on: 01/09/2018 05:00 PM »
Tweet from Jeff Foust:
Quote
George Ricker of MIT, at a seminar at #AAS231, says the TESS spacecraft will ship from Orbital ATK to KSC in about a month, launch in March “according to the current plan” (no earlier than March 20)

Online jebbo

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #96 on: 01/10/2018 07:07 AM »
Useful preview of some of the data products

Quote
(Amazing [email protected] scientist) @mustaric detailing the types of TESS data that MAST will be hosting. #AAS231 https://t.co/EJC4g7aXGl

https://twitter.com/aussiastronomer/status/950899659354058756

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Offline Star One

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #97 on: 01/23/2018 06:44 AM »
An update on the focus shift issue.

Quote
TESS has not been without its problems, though. NASA confirmed last July that engineers discovered that the focus in the four cameras on TESS would drift once the cameras cool to operating temperatures after launch. At the time, the agency said that it believed the issue would not be a major problem for the mission, although other astronomers expressed concern it could affect the spacecraft’s ability to detect exoplanets.

Additional testing and analysis since then has given those involved with the mission greater confidence that they understand the focus issue and that it won’t adversely affect the mission’s science.

“Subsequent testing that we did starting this summer and then into the fall indicated that there is a model” for explaining the focus change, Ricker said at a Jan. 9 briefing about the mission during the AAS conference. “This is a very reproducible crystallization effect for one of the materials used to manufacture the lenses.”

Ricker said the mission did four months of testing on a flight spare camera to understand long-term focus effects. Those tests show that the focus of the camera drifts for about one week, then stops. “There’s essentially no measurable change after that,” he said, calling the issue a one-time “focus shift” rather than a more continuous “focus drift.”

That focus shift, he said, won’t affect the ability of TESS to meet its primary, or “Level One,” science requirements, which call for eventually measuring the mass of at least 50 planets similar in size to the Earth. The mission’s primary focus on photometry — measuring very small changes in brightness of stars — also minimizes the importance of a sharp focus.

http://spacenews.com/a-changing-of-the-guard-in-nasas-hunt-for-exoplanets/

Launch & Landing FCC permits for TESS Just came out confirming March 20th launch date ..... And
It will be a drone ship landing but much closer than the usual landing site for GTO Sats (similar to FH's center core landing site)

https://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_seq=82387&RequestTimeout=1000
https://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_seq=82383&RequestTimeout=1000

Offline gongora

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #99 on: 01/25/2018 07:30 PM »
Launch & Landing FCC permits for TESS Just came out confirming March 20th launch date ..... And
It will be a drone ship landing but much closer than the usual landing site for GTO Sats (similar to FH's center core landing site)

https://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_seq=82387&RequestTimeout=1000
https://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_seq=82383&RequestTimeout=1000

And it's 39-A, I was wondering about that.

(As with all of these FCC permits, probably need the standard disclaimer that they don't actually name the payload.  Sure does look like it would be TESS.)

edit: will be interesting to see whether CRS-14 stays at SLC-40 now or switches back to 39-A.  Those TESS/Bangabandhu/CRS-14 dates wouldn't work any other way unless CRS-14 slips more.
« Last Edit: 01/25/2018 07:45 PM by gongora »

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