Iapetus rev 49 requests: ISS_049IA_FP1NITMAP001_CIRS

Update: 09 Aug 2007 (TD)

Start UTC: IA-05:25 h (2007-253T08:50:40)

Duration: 02:15 h

Alloc. data volume: 12 Mb. ISSPT: 7.6 Mb

TelMode: S&ER-3

Attitude: ISS_NAC to Iapetus (NEG_X to NEP)

Trigger: 2933

Spatial resolution (NAC) = ~235 m/pxl

Geometry:

    UTC             ALTITUDE  SC_LAT   SC_LON   Sun_LAT  Sun_LON  PHASE

2007 SEP 10 08:50:40   45085     9.6     67.8       1.4    213.4  143.7

2007 SEP 10 09:33:53   39013     9.6     68.4       1.4    213.5  143.3

2007 SEP 10 11:05:40   26129     9.5     70.3       1.4    213.8  141.7

Goals: Low southern latitudes high-res. imaging

Pointing (pdt issues):
- CIRS performs high-speed scans
- ~40 min turn to Iapetus
- First tracking begin: 253T09:35:40 UTC
- 09:31:50 to 09:35:40 UTC (3:50 min long): good sit'n'stare over low southern latitudes
- Then: multiple FP1 rapid scans
- 10:57:07 to 11:03:39 UTC: sit'n'stare over unlit edge (calibration)
- Return to custom WP just seconds before request end => not useful for ISS

Exposures (ISSPT issues):
- Exp. times: NAC 1.2s; WAC 120ms (12 bit, g=2)
- Readout Index = 5 set
- Trigger start time set: 2007-253T09:33.40 UTC
- Shutter time offset: 0:00 min
- BOTSIM clr
- Shutter time (should be) ~09:33:53 UTC