[X] My Assistant

[jmknapp]

Interesting science plan item today (Jan. 17):

CIRS_020EN_FP3MAP001_PRIME

If I read it right, Enceladus, specifically the south polar region, occulted Tethys at 3:23UTC this morning:

BEGIN_TIME: 190729625.184386 (2006 JAN 17 00:26:00 UTC)
END_TIME: 190742465.184390 (2006 JAN 17 04:00:00 UTC)

FP3 disk map of Enceladus. One SI at 01:47 into observation. Length extended to accommodate all ORS instruments. Duration 03:34. Enceladus is above the lighted disk of Saturn for the first 15 or 20 minutes. S/C just below ring plane, EN above, and ring shadow above that. EN passes edge of ring ansa ca. 02:30. Splendid opportunity for wonderful WAC PR image. For CIRS, this will be an excellent opportunity to determine scattered radiation from CIRS primary - i.e., with a semi-infinite IR source surrounding the small (~3 mrad) cold disk of EN as a sharp occulting disk. AD=3.0-3.4, phase=19-24, (-1, 192)-(0, 230); EN south polar region occults TE (AD=1.9) northern hemisphere at 03:24-03:28; perhaps should center FP3 on center of TE from 03:23-03:29 and blink to cover occultation and EN S polar region........

Low-phase though so maybe any plumes would be invisible against Tethys' disk.