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ISEE-3

Successful DSN Ranging Session with ISEE-3 (Update)

By Keith Cowing
NASA Watch
June 27, 2014
Filed under

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.

Keith Cowing

NASA Watch founder, Explorers Club Fellow, ex-NASA, Away Teams, Journalist, Space & Astrobiology, Lapsed climber.

4 responses to “Successful DSN Ranging Session with ISEE-3 (Update)”

  1. James Lundblad says:
    June 26, 2014 at 9:58 pm
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    https://www.youtube.com/wat…

  2. Bennett In Vermont says:
    June 26, 2014 at 11:27 pm
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    How does this affect the spin up burn and overall mission timing?

    • kcowing says:
      June 28, 2014 at 3:50 pm
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      We just got the greenlight from NASA for comms until 16 July. We should have new target dates next week.

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