Recommended Equatorial Fields for UBVRI Photometric Calibration
| Chart | RA (J2000) | Dec
(J2000) | N | Nsecondary |
NBLUE | NRED |
|
|
|
|
|
|
|
| 1 | 00:54:27 | +00:40:00 | 3 | 1 |
| 1 |
| 2 | 00:54:41 | +00:41:00 | 4 | 2 |
| 1 |
| 6 | 00:56:06 | +00:52:00 | 3 | 1 |
|
|
| 28 | 03:54:38 | +00:28:00 | 3 |
|
| 2 |
| 52 | 06:52:10 | -00:25:00 | 4 | 1 |
|
|
| 53 | 06:52:12 | -00:18:00 | 9 | 1 | 1 | 3 |
| 54 | 06:52:31 | -00:16:30 | 6 | 3 |
| 1 |
| 55 | 07:24:15 | -00:32:00 | 8 |
| 2 |
|
| 56 | 07:30:00 | -02:06:00 | 7 |
| 1 |
|
| 61 | 09:21:32 | +02:47:00 | 5 |
| 1 |
|
| 68 | 09:56:14 | -00:28:53 | 4 | 1 |
| 1 |
| 71 | 09:57:28 | -00:19:10 | 2 | 7 |
|
|
| 77 | 10:50:07 | -00:01:00 | 4 |
| 1 |
|
| 90 | 12:42:22 | -00:40:00 | 4 | 1 |
|
|
| 95 | 13:25:52.5 | -08:50:00 | 4 |
| 1 |
|
| 104 | 15:39:14 | -00:14:00 | 3 |
|
| 1 |
| 105 | 15:40:12 | -00:19:00 | 3 |
|
|
|
| 109 | 16:35:32 | +09:47:00 | 5 |
| 1 |
|
| 116 | 18:40:51 | +00:02:00 | 4 |
|
| 1 |
| 120 | 18:42:49 | +00:07:00 | 3 | 4 |
| 2 |
| 121 | 18:43:09 | +00:29:00 | 3 | 4 |
| 1 |
| 125 | 19:37:37 | +00:26:00 | 3 |
|
| 2 |
| 130 | 20:44:00 | -10:47:00 | 4 |
| 1 |
|
| 132 | 21:40:57 | +00:27:00 | 2 | 3 |
|
|
| 141 | 22:16:24 | -00:21:00 | 2 | 2 | 1 |
|
- J2000 coordinates are listed for the center of the field.
- N = total number photometric standard stars within the field.
- Nsecondary = number photometric standard stars within the field measured fewer than 5 times by Landolt (1992; AJ, 104, 340).
- NBLUE = number photometric standard stars within the field having B-V < 0.000.
- NRED = number photometric standard stars within the field having B-V > 1.400.