The images below show the approximate transit track. The ingress and egress diagrams show the track for the center of Venus as a solid curve, the disks for the approximate contact times as solid circles, and as dotted circles the Venus disk with an extra ring of 16.5 arcseconds
The program, as run on Wednesday, April 28:
For re-pointings every 130 arcsec of Venus' movement, moving them
off contact times and special-mode runs:
| Date | Time | X (arcsec) | Y (arcsec) |
| 2004/06/08 | 03:27:01 | -1162 | -601 |
| 2004/06/08 | 03:59:25 | -1032 | -604 |
| 2004/06/08 | 04:31:49 | -902 | -607 |
| 2004/06/08 | 05:04:14 | -772 | -609 |
| 2004/06/08 | 05:36:38 | -642 | -612 |
| 2004/06/08 | 06:09:02 | -512 | -614 |
| 2004/06/08 | 06:41:26 | -382 | -617 |
| 2004/06/08 | 07:13:51 | -252 | -620 |
| 2004/06/08 | 07:46:15 | -122 | -622 |
| 2004/06/08 | 08:18:39 | 8 | -625 |
| 2004/06/08 | 08:51:04 | 138 | -627 |
| 2004/06/08 | 09:23:28 | 268 | -630 |
| 2004/06/08 | 09:55:52 | 398 | -632 |
| 2004/06/08 | 10:28:16 | 527 | -635 |
| 2004/06/08 | 11:00:41 | 657 | -638 |
| 2004/06/08 | 11:33:05 | 787 | -640 |
| 2004/06/08 | 12:05:29 | 917 | -643 |
| 2004/06/08 | 12:37:53 | 1047 | -645 |
| 2004/06/08 | 13:10:18 | 1177 | -648 |
| 2004/06/08 | 13:42:42 | 1307 | -651 |
| 2004/06/08 | 14:15:06 | 1437 | -653 |
| 2004/06/08 | 14:47:3 | 1567 | -656 |
| 171A (fixed 7.5s exp., 2x2 summed; movement of 1 pix/exp),
| |
| Register values: | |
| $g2[=18]=18[171 2x2 at AEC+2] | |
| $g1[=17]=40[2s delay] |
| starting with Venus at least 12000. km above the WL limb, plus an extra 15 minutes for a full Venus diameter - as requested by Glenn Schneider)
| |
| N.B. Too early for GBO from Canary islands
| |
| 171A (fixed 8.2s exp., 2x2 summed; movement of 1 pix/exp), 1600A (fixed 0.9s), and 1216A (fixed 2.4s), WL (fixed 0.016s - 4 times standard to increase dynamic range - lossless and/or Q0) Cycle appr. 8.2 [exp] +0.9 [exp] +2.4 [exp] +0.0 [exp] + 4*2 [readout/transfer] ~ 20 s cadence, or 1.3 TRACE resolution elements between exposures at a given wavelength.
| |
| Test run shows: 30s cadence. Why is there an extra 10s overhead? Because of the 2s delay between frames. Lower to 0 ticks.
| |
| Register values: $g2[=18]=18[171 2x2 at AEC+2] $g16=3[top3 for shorter EUV exposures] $g5[=21]=1[1600]+16[1216, standard]+256[context]*8[wl]=2065 $g9[=25]=3[wide frame]+256[context]*14[WL, 0.016s,JPEG0]=3587 $g1[=17]=0[no delay] ; was 40[2s delay] in test run 1. $ga[=26]=2[context cycles; value cannot be 1] |
171A (fixed 15s exp.; movement of 1 pix/exp),
WL & 1600,
| net cadence of about 20s, or 2.7 pixels between exposures at a given
wavelength
|
| Register values: | $g2[=18]=4[171 Q0 AEC] $g5[=21]=1[1600]+8[wl, standard]=9 $g1[=17]=40[2s delay] |
06:10-06:30 high cadence observations in WL (near limb for faculae)
08:19-08:39 high cadence observations in 1600 (partial frames?)
09:24-09:54 high cadence observations in EUV
| N.B. Likely GBO support from Canary islands | |
| WL (fixed 0.0128s = 4 times standard to increase dynamic range) & 1600, at <7.5 s cadence (1 pix/exp), LOSLESS compression, | |
| If possible, run at max. cadence of ~5s for full frame, or ~2.5s for central half of detector, or ~1.5s if only at 1600 and half of the detector (0.1 arcsec occultor resolution). | |
| Register values: $g2[=18]=0[no 171] $g5[=21]=1[1600]+8[wl, standard]+256[context]*8[wl]=2057 $g9[=25]=3[wide frame]+256[context]*15[WL, 0.016s,uncompr.]=3843 or $g9[=25]=3[wide frame]+256[context]*14[WL, 0.016s,JPEG0]=3587 $g1[=17]=40[2s delay] $ga[=26]=5[context cycles] |
| which brings Venus at least 12000. km above the WL limb, plus an extra 15 minutes for a full Venus diameter - as requested by Glenn Schneider) | |
| 171A (fixed 7.5s exp., 2x2 summed; movement of 1 pix/exp), | |
| Register values: $g2[=18]=18[171 2x2 at AEC+2] $g1[=17]=40[2s delay] |
14:45 UT End of program