FORS1 Standard Fields and Stars
The lists of available calibration fields and stars are given here for
various FORS1 setups, i.e. for Bessell filters,
Gunn filters, Spectroscopy, empty
Fields for Twilight Flats and Polarimetry. 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/FORS1/ directory.
For service mode, PSO staff will use the same observing blocks.
Photometric Standard Stars: 1. 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-high
|
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 both 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: Bessel
et al. 1979, UBVRI Photometry (1979PASP...91..589B) and Landolt 1992,
(4) The links provide Postscript charts of the areas with SR and HR fields
indicated, (5) Coordinates are J2000.
Photometric
Standard Stars: 2. Gunn filters (no OBs prepared! not in Calibration Plan!)
|
Template name
|
Star field
|
Center coordinates Ra, Dec
|
|
Photom-std-Gunn-SA92
|
SA92-249
|
00:54:35.5, +00:40:19.5
|
|
Photom-std-Gunn-F762-9
|
F762-9
|
03:33:16.4, -06:05:22.1
|
|
Photom-std-Gunn-E4
|
E4
|
09:23:41.7, -45:25:22.1
|
|
Photom-std-Gunn-E5
|
E5
|
12:05:11.3, -45:34:03.0
|
|
Photom-std-Gunn-PG1633+099
|
PG1633+099
|
16:35:36.0, +09:46:33.4
|
|
Photom-std-Gunn-E7
|
E7
|
17:27:22.7, -45:01:38.0
|
|
Photom-std-Gunn-SA110
|
SA110-503
|
18:43:10.3, +00:28:58.0
|
|
Photom-std-Gunn-MarkA
|
MarkA
|
20:43:59.5, -10:46:32.8
|
|
Photom-std-Gunn-F1038-6
|
F1038-6
|
23:33:40.1, +10:07:05.4
|
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) References:
Thuan-Gunn
system (1976PASP...88..543T) and secondary
standards (1994PASP..106..967J), (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 Gunn & 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 arcsec 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-UBIVR-SR-0048 |
SGP |
00:48:30.3, -28:03:01.0 |
| twil-ABCD-high-UBIVR-SR-0102 |
0102-265 |
01:02:48.5, -26:34:25.0 |
| twil-ABCD-high-UBIVR-SR-0247 |
0248-196 |
02:47:46.6, -19:46:11.1 |
| twil-ABCD-high-UBIVR-SR-0427 |
0427-36 |
04:27:26.1, -36:25:16.0 |
| twil-ABCD-high-UBIVR-SR-0909 |
9090-7 |
09:09:32.6, -07:38:26.0 |
| twil-ABCD-high-UBIVR-SR-1004 |
CT1 |
10:04:27.0, -02:19:00.0 |
| twil-ABCD-high-UBIVR-SR-1102 |
1101-264 |
11:02:23.5, -26:43:56.7 |
| twil-ABCD-high-UBIVR-SR-1226 |
CT5 |
12:26:08.7, -06:38:29.0 |
| twil-ABCD-high-UBIVR-SR-1254 |
CT2 |
12:54:58.7, -02:07:04.0 |
| twil-ABCD-high-UBIVR-SR-1513 |
SER1 |
15:13:13.9, -00:31:47.5 |
| twil-ABCD-high-UBIVR-SR-1539 |
SPKS
04 |
15:39:43.0, -33:56:54.0 |
| twil-ABCD-high-UBIVR-SR-1649 |
SPKS
12 |
16:49:42.0, -15:21:00.0 |
| twil-ABCD-high-UBIVR-SR-1731 |
SPKS
08 |
17:31:06.0, -25:44:24.0 |
| twil-ABCD-high-UBIVR-SR-1802 |
SPKS
09 |
18:02:01.0, -04:32:36.0 |
| twil-ABCD-high-UBIVR-SR-1900 |
SPKS
10 |
19:00:48.0, -37:21:18.0 |
| twil-ABCD-high-UBIVR-SR-1919 |
SPKS
13 |
19:19:09.0, +12:22:05.0 |
| twil-ABCD-high-UBIVR-SR-2126 |
SPKS
14 |
21:26:54.4, -08:51:41.0 |
| twil-ABCD-high-UBIVR-SR-2334 |
2335-40 |
23:34:34.6, -39:49:04.0 |
| twil-ABCD-high-UBIVR-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 UBIVR for the evening dusk.
For the morning the OB are named ..-RVIBU-.. instead, (4) The links call
6.8'x6.8' images from the DSS1
database, (5) Coordinates are B1950.
Highly Polarized Standard Stars for Imaging Polarimetry (IPOL).
OT QUEUE: Polar Std IPOL
|
OB name
|
Finding Chart
|
RA & DEC 2000
|
Comments
|
|
IPOL_NGC2024
|
NGC 2024
|
05:41:38 -01:54:37
|
none |
|
IPOL_Vela1_95
|
Vela1 95
|
09:06:00 -47:19:00
|
none |
|
IPOL_Hiltner652
|
Hiltner 652
|
17:43:20 -28:40:33
|
none |
|
IPOL_HDE316232
|
HDE 316232
|
17:45:44 -29:13:18
|
none
|
|
IPOL_BD-14_4922
|
BD -14 4922
|
18:11:58 -14:56:08
|
none |
|
IPOL_BD12_5133
|
BD -12 5133
|
18:40:02 -12:24:07
|
none |
Readout mode: ABCD, 1x1, high.
There are 4 exposures with the retarder waveplate at 0, 22.5, 45,
and 67.5 deg.
Please check that the CCD is well exposed
(> 10000 counts each exposure) but not saturated!
You may need to adjust the exposure time.
Additional information on (some of) these stars are given on the
FORS polarimetry page
Finding charts are obtained from 6.8' x 6.8' images from the
DSS2 (red) database.
Highly Polarized Standard Stars for Spectropolarimetry (PMOS).
OT QUEUE: Polar Std PMOS
|
OB name
|
Finding Chart
|
RA & DEC 2000
|
Comments
|
NGC 2024
|
NGC 2024
|
05:41:38 -01:54:37
|
none |
|
PMOS_Vela1_95
|
Vela1 95
|
09:06:00 -47:19:00
|
none |
|
PMOS_Hiltner652
|
Hiltner 652
|
17:43:20 -28:40:33
|
none |
|
PMOS_HDE316232
|
HDE 316232
|
17:45:44 -29:13:18
|
none
|
|
PMOS_BD-14_4922
|
BD -14 4922
|
18:11:58 -14:56:08
|
none |
|
PMOS_BD12_5133
|
BD -12 5133
|
18:40:02 -12:24:07
|
none |
Readout mode: A, 1x1, high, windowed 500 pixels in y.
There are 4 exposures with the retarder waveplate at 0, 22.5, 45,
and 67.5 deg.
Please check that the CCD is well exposed
(> 10000 counts each exposure) but not saturated!
You may need to adjust the exposure time.
Additional information on (some of) these stars are given on the
FORS polarimetry page
Finding charts are obtained from 6.8'x6.8' images from the
DSS2 (red)as database.
Unpolarized Standard Stars for Imaging Polarimetry
OT QUEUE: Polar Std IPOL
|
OB Name
|
Finding Chart
|
RA & DEC 2000
|
Comments
|
|
Zero_IPOL_WD2359-434
|
WD 2359-434
|
00:02:11 -43:09:55
|
White dwarf, plx=120 mas. The target is the brightest one.
Only one guiding star in the field, with some vignetting.
Non magnetic according to Koester et al. (1998) |
|
Zero_IPOL_WD0310-688
|
WD 0310-688
|
03:10:31 -68:36:02
|
White dwarf (EG 21), plx=120 mas |
|
Zero_IPOL_WD0752-676
|
WD0752-676
|
07:53:08 -67:47:33
|
White Dwarf, plx =?, high proper motion |
|
Zero_IPOL_WD1344+106
|
WD 1344+106
|
13:47:24 +10:21:38
|
White Dwarf, plx =48, high proper motion, SE star of the binary |
|
Zero_IPOL_WD1615-154
|
WD 1615-154
|
16:17:55 -15:35:51
|
White Dwarf, plx=60 mas, high proper motion |
|
Zero_IPOL_WD1620-391
|
WD 1620-391
|
16:23:36 -39:13:22
|
White Dwarf, plx=78 mas, high proper motion star ~30 arcsecs SE of
our coordinates?
|
|
Zero_IPOL_WD2039-202
|
WD 2039-202
|
20:42:35 -20:04:36
|
White Dwarf, plx=47 mas, high proper motion |
|
Zero_IPOL_WD2149+021
|
WD 2149+021
|
21:52:23 +02:23:07
|
White Dwarf, plx=40 mas, high proper motion star ~1arcmin East or our
coordinates? |
CCD readout mode: A, 1x1, high. There are 4 exposures with the retarder
waveplate at 0, 22.5, 45, and 67.5 deg.
Please check that the CCD is well exposed
(> 10000 counts each exposure) but not saturated!
You may need to adjust the exposure time.
Finding charts are obtained from 6.8'x6.8' images from the
DSS2 (red) database.
Unpolarized Standard Stars for Spectropolarimetry
OT QUEUE: Polar Std PMOS
|
OB Name
|
Finding Chart
|
RA & DEC 2000
|
Comments
|
|
Zero_PMOS_HD10038
|
HD 10038
|
01:37:19 -40:10:38
|
Bright Am, plx=6.4 mas, no need for finding charts; slit width=1.0 arcsec |
|
Zero_PMOS_HD13588
|
HD 13588
|
02:11:17 -46:35:06
|
Bright Am, plx=6.4 mas, no need for finding charts; slit width=1.0 arcsec |
|
Zero_PMOS_HD42078
|
HD 42078
|
06:06:41 -42:17:56
|
Bright Am, plx=10.13, no need for finding charts; slit width=1.0 arcsec
|
|
Zero_PMOS_HD97689
|
HD 97689
|
11:13:51 -52:51:21
|
Bright Am, plx=12.13, no need for finding charts; slit width=1.0 arcsec
|
|
Zero_PMOS_WD1615-154
|
WD 1615-154
|
16:17:55 -15:35:51
|
White Dwarf, plx =?, high proper motion; see finding chart; slit width=2.5 arcsec
|
|
Zero_PMOS_WD1620-391
|
WD 1620-391
|
16:23:36 -39:13:22
|
White Dwarf, plx=78 mas, high proper motion; see finding chart; slit
width=2.5 arcsec
|
|
Zero_PMOS_WD2039-202
|
WD 2039-202
|
20:42:35; -20:04:36
|
White Dwarf, plx=47 mas, high proper motion; see finding chart; slit
width=2.5 arcsec
|
|
Zero_PMOS_WD2149+021
|
WD 2149+021
|
21:52:23; +02:23:07
|
White Dwarf, plx=40 mas, high proper motion;
see finding chart; slit width=2.5 arcsec
|
CCD readout mode: A, 1x1, high, window with 500 pixels in y.
We have 4 exposures with the retarder waveplate
at 0, 22.5, 45, and 67.5 deg.
Please check that the CCD is well exposed
(> 10000 counts each exposure) but not saturated!
You may need to adjust the exposure time.
Finding charts are obtained from 6.8'x6.8' images from the
DSS2 (red) database.
