Observing the moon with the Dwingeloo @radiotelescoop. We hope to track the @TeamSpaceIL #Beresheet from lunar orbit to lunar surface! Good luck #Beresheet! 
pic.twitter.com/hIW3VYeucd
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Signal lost at 19:23:01UTC. Probably when #Beresheet crashed into the lunar surface. Too bad for #Beresheet, but great achievement overall by @TeamSpaceIL!pic.twitter.com/d4gZDrhMuV
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From the Doppler curve we can see the
#Beresheet landing burn started at 19:19:40UTC. It was interrupted at 19:19:40, coincident with signal loss. The signal came back at 19:20:01 with a 4 second break starting at 19:20:12. The signal was lost at 19:23:01 when it crashed.Diesen Thread anzeigen -
For those radio amateurs that know how to deal with IQ data, the 8.6GB
@radiotelescoop recording of the#Beresheet Lunar landing attempt can be downloaded from https://charon.camras.nl/public/satellites/ …. See the bottom of the page.Diesen Thread anzeigen -
Many thanks for Paul PE1NUT for helping operate
@radiotelescoop. We had to figure out where to point it, as the S-band horn is offset from the regular focus position.Diesen Thread anzeigen
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Nice work Cees!
@TeamSpaceIL Awesome work too, trying matters more than succeeding! Good luck next time! -
Yeah, it's a great achievement nonetheless!
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you can see the reflection of the signal off the moon. (I think thats what the fuzzy area above the actual signal is right before the end.)
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Yes, I think that's correct. It was also visible briefly visible before
#Beresheet moved behind the Moon on it's last orbit at 18:03UTC.pic.twitter.com/0q5Rw60C8r
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Thank you very much for that awesome thread. Sad that the lander didn't make it.
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It's been very exciting to follow the
@TeamSpaceIL live stream while watching the Doppler curve live. This really is a unique observation and a once in a life time opportunity! I do hope that many more national and commercial spacecraft will attempt lunar landings in the future.
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Very interesting, thanks for posting this. Why is the doppler shift is faster when the landing burn is on (spacecraft is slowing), and slower when the it's (assuming) in free fall though?. I'd expect the opposite. Can you explain the graph a little bit please?
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The rate of change in observed frequency is proportion to the rate of change in velocity. When engine was on there was a greater rate of change in velocity than engine off relative to the observer.
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