Iapetus rev 49 requests: ISS_049IA_REGMAPTRL001_PRIME

Update: 09 Aug 2007 (TD)

Start UTC: 2007-253T22:40:00

Duration: 02:00 h

Alloc. data volume: 250 Mb. ISSPT: 188.7 + 19.0 + 16.4 + 123.6 Mb = 188.7 + 159.0 Mb = 347.6 Mb

TelMode: S&ER-3

Attitude: ISS_NAC to Iapetus (NEG_X to NEP)

Trigger (4): 2387, 2930, 2929, 2928

Spatial resolution (NAC) = 422 ... 461 m/pxl (GlobMap); 462 + 466 m/pxl (saturnshine);
                                                           470 ... 523 m/pxl (LatColor)

Geometry:

    UTC             ALTITUDE  SC_LAT   SC_LON   Sun_LAT  Sun_LON  PHASE

2007 SEP 10 22:40:20   70344    -9.9    246.5       1.4    216.0   32.8   mapping

2007 SEP 10 23:26:27   76828    -9.9    246.8       1.4    216.2   32.9

2007 SEP 10 23:27:51   77025    -9.9    246.8       1.4    216.2   32.9   saturnshine

2007 SEP 10 23:32:22   77660    -9.9    246.8       1.4    216.2   32.9

2007 SEP 10 23:37:04   78321    -9.9    246.8       1.4    216.2   32.9   LatColor

2007 SEP 11 00:40:00   87169    -9.8    247.2       1.4    216.4   33.1

Goals: - Regional mapping of whole visible hemisphere (mainly trailing) and in saturnshine
- Regional multi-color of different latitudes (from south pole to high northern latitudes)

Pointing (pdt issues):
Mapping (trigger 2387): 22:40:20 UTC; tracking duration = 46:07 min.
- 2x2 mosaic around center of disk (dwell = 2:00 min) (first ftprt 6:19 min. (Hamon color))
- 2+3+3+3 "spiral" around limb, start at south pole, rotate CCW (same dwell)

Saturnshine (lat_lon_232, 233, trigger 2930, 2929): 23:27:51 UTC and 23:32.22 UTC
- tracking duration = 3:20 min. each
- Do 2-panel mosaic with two tracking lat/lons (+9/325 [offset +2.0,0,-1.5];
   -20/305 [offset -2.0,0,-0.3])

 Multi color (trigger 2928): 23:37:04 UTC; tracking duration = 62:56 min.
- Do 1x4 mosaic along ~255°W meridian in S → N direction, start at south pole
- Do one more ftprt in north-east "edge" of Iapetus
- dwells: 11:17 min; 11:02 min; 10:46 min; 11:30 min; 14:06 min.

Exposures (ISSPT issues):
Mapping:
- First ftprt: N06 + 3 short wavel. + clr (all fullres. (Uv2/Uv3 2sum); color LUT, clr 12 bit)
- 2nd to 15th: (Uv3, Grn, Ir1) 2sum LUT + clr full-res 12 bit 80ms every ftprt
- 2nd-4th ftprts: Include WAC Vio,Grn,Ir1 (LUT)
- Last ftprt: Includes 2 NAC clr (12 bit) (46s 2sum g=2; 32s fullres. g=3)
   (as a third saturnshine ftprt further south)

Saturnshine:
- 3 NAC clr shutters (12 bit): 32s (2sum, g=2); 2x 32s (fullres., g=3)

Multi color (90 shutters total):
- NAC 10-color LUT (Uv2, UV2/Uv3, Uv3, Grn, Ir1, Ir3, Bl1, Red, Ir2, Ir4)
- NAC polarizers: NP09 (1st, 4th, 5th); NP06 (2nd, 3rd ftprts); all LUT lossy comp.
- WAC context (clr LUT lossless)

Exposure times:
- see separate list (C/A > +03:00 hrs) (except Uv2+Uv2/Uv3: 18s (g=3) for smear reasons)

- Radial smear table:
            exp.      full res.       2sum
            32s → 0.99 pxl      0.50 pxl
            38s → 1.18 pxl      0.59 pxl
            46s → 1.43 pxl      0.71 pxl