Author Topic: SpaceX F9 : Starlink v1.0 L23 : CCSFS SLC-40 : 7 April 2021 (1634 UTC)  (Read 52301 times)

Offline darkenfast

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What was the splash that happened in the top right of the feed at T=+8:53 (27:58 in the webcast)


I believe that was a digital hitch in the video, because it disappeared instantly.
« Last Edit: 04/08/2021 11:07 pm by gongora »
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Offline Citabria

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Here is a comparison of the public booster telemetry from Starlink L22 and L23.

Love your graphs! Keep it up, please.

One suggestion: post them in PNG format for sharpness and smaller file size.

Offline kdhilliard

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What was the splash that happened in the top right of the feed at T=+8:53 (27:58 in the webcast)
YouTube time-links don't work when embedded by the forum software.
One workaround is using the full "youtube.com/watch?v=...&t=..." format without the leading "www." to suppress embedding:
* https://youtube.com/watch?v=Uy9Jn-3vuPs&t=1671  (Linked a few second earlier.)

As for your "splash" ... I don't know, but I think it may just be a compression artifact.
Note how it disappears entirely from one frame to the next, three frames prior to T+09:00.
(However the sudden disappearance could itself be a compression artifact.)
Whatever it is, if forms from left to right and is present for about five seconds, and if I didn't know any better I'd say it was the booster venting inline with the visible horizon.  But while the F9 booster does vent from a number of locations shortly after landing, I don't think it does so at that location.

Offline gin455res

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What was the splash that happened in the top right of the feed at T=+8:53 (27:58 in the webcast)
YouTube time-links don't work when embedded by the forum software.
One workaround is using the full "youtube.com/watch?v=...&t=..." format without the leading "www." to suppress embedding:
* https://youtube.com/watch?v=Uy9Jn-3vuPs&t=1671  (Linked a few second earlier.)

As for your "splash" ... I don't know, but I think it may just be a compression artifact.
Note how it disappears entirely from one frame to the next, three frames prior to T+09:00.
(However the sudden disappearance could itself be a compression artifact.)
Whatever it is, if forms from left to right and is present for about five seconds, and if I didn't know any better I'd say it was the booster venting inline with the visible horizon.  But while the F9 booster does vent from a number of locations shortly after landing, I don't think it does so at that location.
It was accompanied by a venty/splash/fizzy type noise.

Offline AC in NC

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What was the splash that happened in the top right of the feed at T=+8:53 (27:58 in the webcast)
YouTube time-links don't work when embedded by the forum software.
One workaround is using the full "youtube.com/watch?v=...&t=..." format without the leading "www." to suppress embedding:
* https://youtube.com/watch?v=Uy9Jn-3vuPs&t=1671  (Linked a few second earlier.)

As for your "splash" ... I don't know, but I think it may just be a compression artifact.
Note how it disappears entirely from one frame to the next, three frames prior to T+09:00.
(However the sudden disappearance could itself be a compression artifact.)
Whatever it is, if forms from left to right and is present for about five seconds, and if I didn't know any better I'd say it was the booster venting inline with the visible horizon.  But while the F9 booster does vent from a number of locations shortly after landing, I don't think it does so at that location.
It was accompanied by a venty/splash/fizzy type noise.
It's compression artifacts.  End of story.

Consecutive Frames, 5 artifacts instantly introduced and develop before disappearing.
« Last Edit: 04/08/2021 02:01 pm by AC in NC »

Offline kdhilliard

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It was accompanied by a venty/splash/fizzy type noise.

That does come at about the right time, doesn't it?  But unfortunately, we don't get any sound from those cameras.  The noise is either coming from the Hawthorne production floor, or from a cartload of dishes being bussed to their cafeteria scullery.  (It is quite common to hear cafeteria background noises during launch commentary.)

Offline Jansen

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Offline OneSpeed

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Here is a comparison of the public booster telemetry from Starlink L22 and L23.

Love your graphs! Keep it up, please.

One suggestion: post them in PNG format for sharpness and smaller file size.

Thanks for the feedback. I used to post them as .png files, but a couple of months ago there were some display issues with .png on the site, so I swapped to .jpg. Perhaps a mod can tell me the preferred site format?

Online Steven Pietrobon

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Thanks for the feedback. I used to post them as .png files, but a couple of months ago there were some display issues with .png on the site, so I swapped to .jpg. Perhaps a mod can tell me the preferred site format?

By the way, the files you posted are in BMP format, not JPG (despite the extension being JPG), which explains the large file size. Here are the file sizes with different formats for "StarlinkS1-L22-23.bmp".

BMP: 6.4 MB (original file size and type)
JPG: 133 KB
GIF: 62.8 KB
PNG: 105 KB

So, I would recommend posting using GIF, which does not add artefacts like JPG and has better compression than PNG for images with simple colours and shapes. I use IrfanView to convert the various images. Just open the file using IrfanView -> File -> Save As... -> Save as type: -> GIF - Compuserve GIF -> Save. The File -> Save as... operation can be called by just typing S on your keyboard.

https://www.irfanview.com/
« Last Edit: 04/09/2021 09:19 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online FutureSpaceTourist

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https://twitter.com/spacexfleet/status/1380502177605689348

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Shelia Bordelon is now under one hour away from Port Canaveral with the fairing from the Starlink mission earlier this week.

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https://twitter.com/gregscott_photo/status/1380527869990993926

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SpaceX's new recovery ship the Shelia Bordelon arrived back in port early this morning with only 1 fairing from the recent Starlink 23 mission. The fairing appeared in good shape but the disposition of the 2nd fairing is unknown. #spaceX #NASA #Science #SpaceXFleet

Offline SPKirsch

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https://twitter.com/SpaceXFleet/status/1380638470562054146
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OCISLY droneship and B1058-7 still closing in on Port Canaveral.

Droneship should be within the vicinity of Port Canaveral around midnight, setting up an arrival after dawn tomorrow morning.

Online FutureSpaceTourist

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https://twitter.com/spacexfleet/status/1380824125271314435

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Good Morning ☀

OCISLY and B1058 are just offshore and preparing to arrive at Port Canaveral in the next couple of hours

Online FutureSpaceTourist

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twitter.com/spacexfleet/status/1380858618837405702

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Falcon 9 B1058-7 has arrived at Port Canaveral.

Watch live: youtube.com/watch?v=gnt2wZ…

https://twitter.com/spacexfleet/status/1380859216446038021

Online FutureSpaceTourist

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Closer Fleetcam shots attached

« Last Edit: 04/10/2021 12:33 pm by FutureSpaceTourist »

Online FutureSpaceTourist

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https://twitter.com/gregscott_photo/status/1380867013631954951

Quote
SpaceX's Booster B1058.7 & OCISLY arrived at Port Canaveral just after sunrise this morning from this weeks #spaceX Starlink 23 mission The booster is getting extremely sooty with the NASA worm barely visible anymore but appears in good shape #NASA #Science @elonmusk #spacexfleet

Edit to add:

https://twitter.com/julia_bergeron/status/1380864344242716678

twitter.com/spacecoast_stve/status/1380866566938628099

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Possibly the most famous of all the Falcon 9 boosters, B1058 has returned from her 7th mission.

This booster began its life returning human spaceflight to the Space Coast last May during the DM-2 mission. These days, she passes the time sending Starlink satellites to orbit.

https://twitter.com/spacecoast_stve/status/1380866590204428290

Quote
Worm vs meatball? Why not both?!
« Last Edit: 04/10/2021 01:41 pm by FutureSpaceTourist »

Online FutureSpaceTourist

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https://twitter.com/delta_iv_heavy/status/1381684152144162818

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Thats odd. They just set 1058 on the ground instead of the stand they use to raise the legs.

https://twitter.com/delta_iv_heavy/status/1381696342448291840

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Its over the stand now, guess they just set it down for some reason.

NSF live Fleetcam shot attached

Edit to add:

https://twitter.com/abernnyc/status/1381683737193222152
« Last Edit: 04/12/2021 08:48 pm by FutureSpaceTourist »

Online FutureSpaceTourist

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https://twitter.com/jennyhphoto/status/1381708433234272266

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#SpaceX #Falcon9 #booster B1058 returns after its 7th flight. #spacexfleet

Online FutureSpaceTourist

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https://twitter.com/spacecoast_stve/status/1382033090013462530

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Holy levitating Falcon, Batman!

B1058 is moments away from being placed on the transporter to be rolled away and prepped for another mission.

But if you’re watching Fleetcam, you already knew that.
youtu.be/gnt2wZBg89g

https://twitter.com/abernnyc/status/1382017815411109891

Quote
B1058 spent the majority of the morning working on its legs. Now that they've all been retracted, we're just waiting on the second crane to attach and lay the booster on its side.

Another beautiful day at the port.
« Last Edit: 04/13/2021 06:12 pm by FutureSpaceTourist »

Offline SPKirsch

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B1058 has left the port.

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