Iapetus rev 49 requests: ISS_049IA_IAPETUS013_VIMS

Update: 09 Aug 2007 (TD)

Start UTC: IA+05:00 h (2007-253T19:15:40)

Duration: 00:44 h

Alloc. data volume: 46 Mb. ISSPT: 7.7 + 70.1 = 77.9 Mb

TelMode: S&ER-3

Attitude: ISS_NAC to Iapetus (NEG_X to NorthPoleDir)

Trigger (2): 2386, 2931

Spatial resolution (NAC) = 252 (crater) + 255...266 m/pxl (color)

Offset from first tracking period (for trigger start): 0:00:00 h (2386); 0:04:05 h (2931)

Geometry:

    UTC             ALTITUDE  SC_LAT   SC_LON   Sun_LAT  Sun_LON  PHASE

2007 SEP 10 19:15:40   41575    -9.9    244.5       1.4    215.4   31.6

2007 SEP 10 19:18:30   41973    -9.9    244.6       1.4    215.4   31.6

2007 SEP 10 19:19:35   42125    -9.9    244.6       1.4    215.4   31.6

2007 SEP 10 19:22:35   42547    -9.9    244.6       1.4    215.4   31.6

2007 SEP 10 19:35:06   44306    -9.9    244.8       1.4    215.4   31.7

2007 SEP 10 19:45:35   45779    -9.9    244.9       1.4    215.5   31.8

2007 SEP 10 19:59:40   47758    -9.9    245.1       1.4    215.5   31.9

Goals: - High-res. observation of big basin at 40°S/250°W
- Multi-color high-res. of equat. transition terrain sample
- Stereo with WACs from VIMS_ORSHIRES request

Pointing (pdt issues): (VIMS designs)
- Latlon_601 / trigger 2386: 1x1 mosaic over large basin; tracking at 40°S, 250°W
- Latlon_602 / trigger 2931: 1x1 mosaic at sub-S/C point; tracking at 10°S, 230°W
- Turn back to WP: duration = 11:59 min.
- First tracking start: 2007-253T19:18:30 UTC; duration = 65s
- Second tracking start: 2007-253T19:22:35 UTC; duration = 23:00 min

Exposures (ISSPT issues):
First ftprt (trigger 2386):
- N03 (Uv3 2.0s g=2;Grn 260ms g=1; Ir1 220ms g=1) (2sum LUT)
- NAC clr (LUT 100ms g=2)

Second ftprt (trigger 2391):
- NAC clr
- NAC N09 (Uv2, Uv3, Grn, Ir1, Ir3, Bl1, Red, Ir2, Ir4) + NP06
- All LUT except Uv2 filter

Exposure times:
- see separate list (C/A > +03:00 hrs) (except Uv2: 18s (g=3) for smear reduction)

Radial smear (full res.):
   18s  => 1.0 pxl
   12s  => 0.67 pxl
   8.2s => 0.46 pxl