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Tonight we're using the Dwingeloo @radiotelescoop to track the landing of the @isro #Chandrayaan2Live Vikram lander on the surface of the Moon. The lander just reappeared from behind the Moon and locked on to the Madrid telescope of the @dsn_status network. 
@radiotelescoop @isro @dsn_status @PI9CAM @tammojan The #Chandrayaan2Live Doppler curve has just reached its maximum. This means it has just passed over the lunar North pole and is now moving South towards the landing site.
@radiotelescoop @isro @dsn_status @PI9CAM @tammojan The S-band carrier of #Chandrayaan2Live is showing faint whisps over the last few minutes. Could these be reflections of the signal from the Lunar surface?
@radiotelescoop @isro @dsn_status @PI9CAM @tammojan The kink in the Doppler curve of #Chandrayaan2Live Vikram lander shows that the landing burn started.
@radiotelescoop @isro @dsn_status @PI9CAM @tammojan Another kink in the Doppler curve. The end of the rough braking phase.
@radiotelescoop @isro @dsn_status @PI9CAM @tammojan It looks like the @isro #Chandrayaan2 Vikram lander has crashed. After the rough braking phase the Doppler curve from @radiotelescoop shows some wiggles, and then, at 20:20:01UTC the signals disappeared...
@radiotelescoop @isro @dsn_status @PI9CAM @tammojan It looks like the @isro #Chandrayaan2 Vikram lander has crashed. After the rough braking phase the Doppler curve from @radiotelescoop shows some wiggles, and then, at 20:20:01UTC the signals disappeared...
@radiotelescoop @isro @dsn_status @PI9CAM @tammojan This is the full Doppler curve, showing the #Chandrayaan2 Vikram lander start the descent burn and transition from the rough braking phase. It's not clear with how to interpret the wiggles at the end of that phase... Another reminder that space is hard! Don't give up @isro!
@radiotelescoop @isro @dsn_status @PI9CAM @tammojan This plot shows a zoom of the Doppler curve during the last moments of #Chandrayaan2.
