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FORS2 Standard Fields and Stars

The lists of available calibration fields and stars are given here for various FORS2 setups, i.e. for Bessell filters, Spectroscopy, and empty Fields for Twilight Flats. The name of the Observation Blocks already prepared by PSO and available for any visiting observer is given, as well as some information on the field or star. These OBs can be retrieved from the control room in the /home/visitor/impex/FORS2/ directory. For service mode, PSO staff will use the same observing blocks.
 

Photometric Standard Stars: Bessell filters

Template name
Star field
Center coordinates Ra, Dec
Photom-std-SA92-high
SA92-249
00:54:35.5, +00:40:19.5
Photom-std-PG0231+051-high
PG0231+051
02:33:39.8, +05:18:37.7
Photom-std-SA95-high
SA95-105
03:53:20.0, +00:00:57.8
Photom-std-SA98-high
SA98-670
06:52:14.4, -00:19:49.9
Photom-std-Rubin149-high
Rubin149
07:24:15.3, -00:32:20.9
Photom-std-Rubin152-high
Rubin152
07:29:58.1, -02:05:45.5
Photom-std-SA100-high
SA100-269
08:53:16.1, -00:42:19.3
Photom-std-PG0942-029-high
PG0942-029
09:45:12.1, -03:08:03.2
Photom-std-SA101-high
SA101-429
09:57:35.9, -00:18:50.3
Photom-std-PG1047+003-high
PG1047+003
10:50:08.5, -00:01:04.3
Photom-std-PG1323-high
PG1323-086
13:25:52.5, -08:49:56.6
Photom-std-PG1528+062-high
PG1528+062
15:30:44.7, +06:01:04.8
Photom-std-PG1633+099-high
PG1633+099
16:35:36.0, +09:46:33.4
Photom-std-PG1657+078-high
PG1657+078
16:59:32.4, +07:42:52.0
Photom-std-SA109-high
SA109-949
17:44:15.0, -00:02:17.0
Photom-std-SA110-high
SA110-362
18:42:52.4, +00:06:28.1
Photom-std-SA111-high
SA111-2088
19:38:22.0, +00:31:01.0
Photom-std-MarkA-highl
MarkA
20:43:59.5, -10:46:32.8
Photom-std-SA113-high
SA113-239
21:41:09.5, +00:23:00.0
Photom-std-PG2213-006-high
PG2213-006
22:16:23.2, -00:21:40.8
Photom-std-PG2331+055-high
PG2331+055
23:33:47.9, +05:46:16.8
Notes: (1) The OB are prepared with high CCD gain, four-port readout, (2) The coordinates of the field center have been chosen so that a good coverage of the Landolt star fields is obtained with both SR and HR collimators, (3) Reference: UBVRI Photometry (1979PASP...91..589B), (4) The links provide Postscript charts of the areas with SR and HR fields indicated, (5) Coordinates are J2000.
 

Spectroscopic Standard Stars and Imaging Standards for interference filters

Template name
Star name
Coordinates Ra, Dec
specphot-std-G158-100
G158-100
00:33:54.32, -12:07:57.1
specphot-std-LTT377
LTT377
00:41:46.82, -33:39:08.2
specphot-std-BPM16274
BPM16274 (*)
00:50:03.18, -52:08:17.4
specphot-std-LTT1020
LTT1020
01:54:49.68, -27:28:29.7
specphot-std-EG21
EG21
03:10:30.98, -68:36:02.2
specphot-std-LTT1788
LTT1788
03:48:22.17, -39:08:33.6
specphot-std-GD50
GD50
03:48:50.06, -00:58:30.4
specphot-std-SA95-42
SA95-42
03:53:43.68, -00:04:33.0
specphot-std-HZ4
HZ4
03:55:21.70, +09:47:18.7
specphot-std-LB227
LB227
04:09:28.76, +17:07:54.4
specphot-std-HZ2
HZ2
04:12:43.51, +11:51:50.4
specphot-std-GD71
GD71
05:52:27.51, +15:53:16.6
specphot-std-LTT2415
LTT2415
05:56:24.30, -27:51:28.8
specphot-std-HD49798
HD49798 (*)
06:48:04.64, -44:18:59.3
specphot-std-LTT3218
LTT3218
08:41:34.10, -32:57:00.1
specphot-std-GD108
GD108
10:00:47.33, -07:33:31.2
specphot-std-LTT3864
LTT3864
10:32:13.90, -35:37:42.4
specphot-std-LTT4364
LTT4364
11:45:37.70, -64:50:25.1
specphot-std-Feige56
Feige56
12:06:39.7, +11:40:39.0
specphot-std-HZ21
HZ21
12:13:56.42, +32:56:30.8
specphot-std-Feige66
Feige66
12:37:23.55, +25:04:00.3
specphot-std-LTT4816
LTT4816
12:38:50.94, -49:47:58.8
specphot-std-Feige67
Feige67
12:41:51.83, +17:31:20.5
specphot-std-GD153
GD153
12:57:02.37, +22:01:56.0
specphot-std-G60-54
G60-54
13:00:09.53, +03:28:55.7
specphot-std-HZ43
HZ43
13:16:22.0, +29:05:57.0
specphot-std-HZ44
HZ44
13:23:35.37, +36:07:60.0
specphot-std-CD-32d9927
CD-32d9927
14:11:46.37, -33:03:14.3
specphot-std-LTT6248
LTT6248
15:39:00.0, -28:35:33.0
specphot-std-BD33d2642
BD33d2642
15:51:59.8, +32:56:54.8
specphot-std-EG274
EG274
16:23:33.75, -39:13:47.5
specphot-std-G138-31
G138-31
16:27:53.59, +09:12:24.5
specphot-std-LTT7379
LTT7379
18:36:26.29, -44:18:33.0
specphot-std-LTT7987
LTT7987
20:10:57.38, -30:13:01.2
specphot-std-G24-9
G24-9
20:13:56.05, +06:42:55.2
specphot-std-LDS749B
LDS749B
21:32:15.75, +00:15:13.6
specphot-std-BD28d4211
BD28d4211
21:51:11.07, +28:51:51.8
specphot-std-G93-48
G93-48
21:52:25.33, +02:23:24.3
specphot-std-BD25d4655
BD25d4655
21:59:42.02, +26:25:58.1
specphot-std-NGC7293
NGC7293
22:29:38.46, -20:50:13.3
specphot-std-LTT9239
LTT9239
22:52:40.88, -20:35:26.3
specphot-std-LTT9491
LTT9491
23:19:34.98, -17:05:29.8
specphot-std-Feige110
Feige110
23:19:58.39, -05:09:55.8
specphot-std-GD248
GD248
23:26:06.69, +16:00:21.4
Notes: (*) These stars only have model data above 3200Å, (1) The OB are prepared with high CCD gain, one-port readout, (2) The OB exist in MOS setup (three 5" slitlets) and in LSS, using the largest 2.5" slit -then the OB name contains "lss-" at the beginning, (3) The links provide detailed information on individual stars, (4) There is also a general description as well as an RA ordered list and an RA-Dec skymap for standards including the above listed, (5) Coordinates are J2000.
 

Empty Fields for Twilight Flats

Template name
Field name
Center coordinates Ra, Dec
twil-ABCD-high-BIVR-SR-0048 SGP 00:48:30.3, -28:03:01.0
twil-ABCD-high-BIVR-SR-0102 0102-265 01:02:48.5, -26:34:25.0
twil-ABCD-high-BIVR-SR-0247 0248-196 02:47:46.6, -19:46:11.1
twil-ABCD-high-BIVR-SR-0427 0427-36 04:27:26.1, -36:25:16.0
twil-ABCD-high-BIVR-SR-0909 9090-7 09:09:32.6, -07:38:26.0
twil-ABCD-high-BIVR-SR-1004 CT1 10:04:27.0, -02:19:00.0
twil-ABCD-high-BIVR-SR-1102 1101-264 11:02:23.5, -26:43:56.7
twil-ABCD-high-BIVR-SR-1226 CT5 12:26:08.7, -06:38:29.0
twil-ABCD-high-BIVR-SR-1254 CT2 12:54:58.7, -02:07:04.0
twil-ABCD-high-BIVR-SR-1513 SER1 15:13:13.9, -00:31:47.5
twil-ABCD-high-BIVR-SR-1539 SPKS 04 15:39:43.0, -33:56:54.0
twil-ABCD-high-BIVR-SR-1649 SPKS 12 16:49:42.0, -15:21:00.0
twil-ABCD-high-BIVR-SR-1731 SPKS 08 17:31:06.0, -25:44:24.0
twil-ABCD-high-BIVR-SR-1802 SPKS 09 18:02:01.0, -04:32:36.0
twil-ABCD-high-BIVR-SR-1900 SPKS 10 19:00:48.0, -37:21:18.0
twil-ABCD-high-BIVR-SR-1919 SPKS 13 19:19:09.0, +12:22:05.0
twil-ABCD-high-BIVR-SR-2126 SPKS 14 21:26:54.4, -08:51:41.0
twil-ABCD-high-BIVR-SR-2334 2335-40 23:34:34.6, -39:49:04.0
twil-ABCD-high-BIVR-SR-2345 2345+007 23:45:45.9, +00:40:40.0
Notes: (1) The OB are prepared with high CCD gain, four-port readout, Standard Resolution Collimator, (2) Filters defined in the OB are BIVR for the evening dusk. For the morning the OB are named ..-RVIB-.. instead, (4) The links call 6.8'x6.8' images from the DSS1 database, (5) Coordinates are B1950.