Table 7 Astrometry of star-field images
From: Performance of Akatsuki/IR2 in Venus orbit: the first year
Images (Oct. 23, 2010) | Center coordinate | Scale (% of nominal) | Tilt (°) | RMS (pixels) | ||
|---|---|---|---|---|---|---|
Time (UT) | RA (°) | DEC (°) | ||||
1 (33)a | 00:37:05 | 115.788 (Obs) | 24.0930 (Obs) | 0.952 | − 0.702 | 0.88 |
00:39:17 | 116.122 (SPICE) | 24.1096 (SPICE) | ||||
00:41:29 | ||||||
2 (35)a | 01:27:26 | 127.458 (Obs) | 21.8535 (Obs) | 0.950 | − 0.709 | 0.88 |
01:29:38 | 127.798 (SPICE) | 21.8142 (SPICE) | ||||
01:34:15 | ||||||
3 (38)a | 00:11:55 | 109.836 (Obs) | 24.8835 (Obs) | 0.951 | − 0.660 | 0.91 |
00:14:07 | 120.168 (SPICE) | 24.9046 (SPICE) | ||||
00:16:19 | ||||||
Average result | X: − 0.304 (°) | Y: + 0.052 (°) | 0.951 | − 0.690 (°) | ||