GalSatsMasterlog

From Groupwiki

Jump to: navigation, search

This table documents the history of attempted measurements of the spin state of Europa and Ganymede.

Entries in green indicate successful runs.
Entries in red indicate that our time request was denied.
Entries in dark red indicate hardware, software, or human failures.
Entries in orange have uncertain status.

Number Date Status Summary
01 Ganymede 2013 DEC 23 Correlation detected Correlation likely truncated
02 Europa 2013 DEC 30 Correlation detected
03 Ganymede 2014 JAN 05 Correlation detected
04 Europa 2014 JAN 06 Correlation detected (SC only) Correlation poorly defined in initial analysis
05 Ganymede 2014 JAN 07 No echoes at GBT Brake of prime focus boom is frozen (-7F). Unable to retract boom and observe at X-band.
06 Europa 2014 JAN 10 Echoes detected No obvious correlation
07 Ganymede 2014 JAN 13 No transmission from DSS-14 DSS-14 skid pump #2 has failed and the azimuth brakes will not release.
08 Europa 2014 JAN 17 Correlation detected (SC only) Correlation poorly defined in initial analysis
09 Ganymede 2014 FEB 02 Poor echoes at Goldstone Goldstone mirror misaligned


Number Date Status Summary
01 Ganymede 2012 NOV 13 no echoes detected incorrect Doppler polynomial used - may be salvageable with lots of extra data processing
02 Europa 2012 NOV 16 correlation detected
03 Ganymede 2012 NOV 17 correlation detected GBT Tsys 60 K (2.1 factor degradation)
04 Europa 2012 NOV 20 echoes detected
05 Europa 2012 NOV 27 faint echoes detected GBT Tsys 50 K (1.8 factor degradation)
06 Europa 2012 DEC 04 echoes detected
07 Ganymede 2012 DEC 11 correlation detected GBT Tsys 48 K (1.7 factor degradation)
08 Europa 2012 DEC 15 correlation detected
09 Europa 2012 DEC 18 correlation detected
10 Europa 2012 DEC 22 correlation detected


Number Date Status Summary
01 2011 SEP 24 correlation detected 45 minutes of data.
02 2011 SEP 27 correlation detected 45 minutes of data.
03 2011 SEP 29 echoes detected 68 minutes of data. Echoes weaker than on Sep 24. Rain and high Tsys at GBT. No correlation detected so far. Cooling pump #1 over-heated.
04 2011 OCT 01 correlation detected 50 minutes of data. Correlation barely seen in OC data. Weakest among Sep 24, Sep 27, and Oct 1.
05 2011 OCT 03 correlation detected 45 minutes of data. Weaker than Sep 24, Sep 27, and Oct 1.
06 2011 OCT 04 no data Cooling pump #2 unable to function due to valve left closed by mistake. Cooling pump #1 not yet aligned. Unable to transmit.
07 2011 OCT 06 echoes detected 34 minutes of data. No correlation detected so far. UCLA network outage - no access to data-taking instrument due to DSN firewall.
08 2011 OCT 08 no data Transmitter problems. Unable to transmit.
09 2011 OCT 10 correlation detected 26 minutes of data. Correlation seen in SC only. First attempt to get range (failed due to hardware problem - coders)
10 2011 OCT 13 correlation detected 30 minutes of data. Second attempt to get range (failed due to radiation clearance problem).
11 2011 OCT 15 correlation detected 30 minutes of data. Strongest SC correlation detected so far. Correlation seen in SC only. DSS-14 hit brakes twice during track.
12 2011 OCT 17 correlation detected 30 minutes of data. Weakest SC correlation detected so far. Correlation seen in SC only. On-site observing at Goldstone.
13 2011 OCT 19 correlation detected 30 minutes of data. Strong SC correlation - possibly widest so far. Correlation seen in SC only.
14 2011 OCT 20 correlation detected 30 minutes of data. Second strongest SC correlation.
15 Ganymede 2011 OCT 22 correlation detected 30 minutes of data. Strong correlation in both polarizations. Excellent prospect for placing lower bound on obliquity.
16 2011 OCT 24 echoes detected 30 minutes of data. No correlation detected so far.
17 2011 OCT 26 correlation detected 30 minutes of data, interrupted by 4 peaking procedures to workaround stuck subreflector at GBT. Correlation seen in SC only.
18 2011 OCT 29 echoes detected 11 minutes of data. Weak echoes. No correlation detected.
19 2011 OCT 31 correlation detected 30 minutes of data. Weak correlation. Correlation seen in SC only.
20 Ganymede 2011 NOV 02 correlation detected 30 minutes of data. Correlation detected in both polarizations, but not as strong as Oct 22.
21 2011 NOV 04 correlation detected 30 minutes of data. Weak correlation. Seen in SC only.
22 2011 NOV 05 correlation detected 30 minutes of data.
23 2011 NOV 07 correlation detected 12 minutes of data.
24 2011 NOV 09 echoes detected 28.5 minutes of data. No correlation detected. GBT levels abnormal following 2005 YU55. Likely due to programmable attenuators in unknown state.
25 2011 NOV 11 echoes detected 20 minutes of data. No correlation detected.
26 Ganymede 2011 NOV 14 correlation detected 30 minutes of data. Correlation seen in SC only.
27 2011 NOV 16 echoes detected 30 minutes of data. No correlation detected in either SC or OC.
28 2011 NOV 18 echoes detected 30 minutes of data. No correlation detected in either SC or OC.
29 2011 NOV 21 no data Transmitter tripped just before magic moment
30 2011 NOV 23 echoes detected 15 minutes of data. No correlation detected in either SC or OC.


Frank Ghigo's system temperature plots

Personal tools