Enceladus Plume Search, Nov. 27 |
Enceladus Plume Search, Nov. 27 |
Nov 24 2005, 04:01 PM
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Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
Interesting item in the science plan kernel (S16) just released to the NAIF website:
OBSERVATION_ID: S1629 SEQUENCE: S16 OBSERVATION_TITLE: Plume Search SCIENCE_OBJECTIVE: Hope to detect/observe plumes, whether from volcanic activity or geysers. OBS_DESCRIPTION: Point and stare. SUBSYSTEM: ISS PRIMARY_POINTING: ISS_NAC to Enceladus (0.0,5.0,0.0 deg. offset) REQUEST_ID: ISS_018EN_PLUMES001_PRIME REQUEST_TITLE: ENCELADUS Geyser/Plume Search REQ_DESCRIPTION: 1;ENCELADUS Geyser/Plume Search 1x1xNPp -- 3 different exposures BEGIN_TIME: 2005 NOV 27 19:00:00 UTC END_TIME: 2005 NOV 27 20:00:00 UTC -------------------- |
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Dec 1 2005, 09:14 AM
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Member Group: Members Posts: 356 Joined: 12-March 05 Member No.: 190 |
There is a second derivative of two ammonia absorption lines which occurs in the near IR at 788nm and is quite strong. VIMS should have ample spectral resolution to pick it out. The line overlaps with a methane overtone at 790nm as seen here in this jupiter spectra but there should be relatively little methane around in this particular observation and if there is any it should be easily constraind by its other strong absorption lines. Also INMS is perfectly suited to detecting this sort of thing if a plume flythrough were to occur.
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