Keith’s 26 June Update: Just as our DSN window closed today we were able to get 2 way Doppler lock and ranging at a 47.5 kHz offset.  DSN got the four ranging points needed from ISEE-3. This is the first time since 1999 that DSN has talked to the spacecraft. A follow-up session tomorrow should get us a lot more recording time. Hats off to the DSN guys – especially the folks at DSS-24.
Keith’s 27 June Update: We had an even greater DSN pass today with ISEE-3. We managed to get ~30 minutes of data (11 range points) after achieving 2 way Doppler lock and ranging at a 47.5 kHz offset.

Biologist, Explorers Club Fellow, ex-NASA Space Biologist and Payload integrator, Editor of NASAWatch.com and Astrobiology.com, Lapsed climber, Explorer, Synaesthete, Former Challenger Center board member...

4 replies on “Successful DSN Ranging Session with ISEE-3 (Update)”

    1. We just got the greenlight from NASA for comms until 16 July. We should have new target dates next week.

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