HET Spectrophotometric Standard Stars

Starting in early 2021, we began using the CALSPEC spectrophotometric standard stars for LRS2-B, LRS2-R, and VIRUS. The subset in use is shown below (selected for declination and brightness).

Upon request, the RAs will select an available standard star for your program and observe it some time on the same night as your observation (usually). If you require specific stars to be observed or require observations at specific times during the night, you should submit those as targets within your program.

All standard star observations are available to all HET partners and can be accessed on TACC.

Star Name RA Dec SpType U B V R I J Vexp Bexp Rexp

1732526 17:32:52.630 +71:04:43.12 A4V NaN 12.75 12.21 NaN NaN 12.289 60 180 120

1740346 17:40:34.679 +65:27:14.77 A6V NaN 12.95 12.12 NaN NaN 12.079 60 180 120

1743045 17:43:04.486 +66:55:01.66 A8III NaN 13.8 13.525 NaN NaN 12.979 60 240 180

1757132 17:57:13.233 +67:03:40.77 A3V NaN 11.91 12.01 NaN NaN 11.311 60 120 120

1802271 18:02:27.17 +60:43:35.7 A2V NaN 12 11.985 NaN NaN 11.872 60 120 120

1805292 18:05:29.275 +64:27:52.13 A4V NaN 12.54 12.74 NaN NaN 12.039 60 180 120

1808347 18:08:34.736 +69:27:28.72 A3V NaN 12.18 11.69 NaN NaN 11.652 60 120 120

1812095 18:12:09.567 +63:29:42.26 A3V NaN 11.94 12.01 NaN NaN 11.368 60 120 120

BD+023375 17:39:45.595 +02:24:59.61 A5 10.18 10.4 9.92 9.47 9.12 8.799 -99 60 30

BD+174708 22:11:31.375 +18:05:34.16 sdF8 9.73 9.91 9.46 9.03 8.7 8.435 -99 30 30

BD+210607 04:14:35.516 +22:21:04.25 F2 9.49 9.68 9.23 8.77 8.43 8.165 -99 30 15

BD+262606 14:49:02.355 +25:42:09.14 A5 9.92 10.16 9.73 9.27 8.95 8.6767 -99 60 30

BD+292091 10:47:23.163 +28:23:55.93 F5 NaN 10.72 10.22 10.1 NaN 9.104 -99 60 60

BD+541216 08:19:22.572 +54:05:09.63 sdF6 10.02 10.24 9.71 9.4 NaN 8.617 -99 60 30

BD+601753 17:24:52.277 +60:25:50.78 A1V NaN 9.72 9.65 NaN NaN 9.612 -99 30 30

FEIGE110 23:19:58.400 -05:09:56.17 sdO 10.36 11.45 11.5 11.97 12.145 12.548 60 60 120

FEIGE34 10:39:36.738 +43:06:09.21 sdO 9.613 10.91 11.14 11.319 11.464 11.643 -99 60 60

G191B2B 05:05:30.618 +52:49:51.92 DA.8 10.25 11.44 11.69 11.93 12.108 12.543 60 60 120

GD153 12:57:02.322 +22:01:52.63 DA1.2 11.883 13.06 13.349 13.488 13.669 14.012 60 180 180

GD71 05:52:27.620 +15:53:13.23 DA1.5 11.675 12.783 13.032 13.169 13.337 13.728 60 180 180

GJ754.1A 19:20:34.923 -07:40:00.07 DBQA5 11.553 12.345 12.29 12.229 12.164 12.351 60 120 120

GRW+705824 13:38:50.478 +70:17:07.64 DA2.4 11.807 12.54 12.6 13.01 12.979 13.248 60 180 180

HD37725 05:41:54.370 +29:17:50.96 A3V NaN 8.12 8.31 NaN NaN 7.953 -99 15 15

HD55677 07:14:31.290 +13:51:36.79 A4V NaN 9.47 9.41 NaN NaN 9.24 -99 30 30

HD106252 12:13:29.510 +10:02:29.89 G0 NaN 8 7.36 7 NaN 6.302 -99 15 15

HD116405 13:22:45.124 +44:42:53.91 A0V NaN 8.27 7.34 NaN NaN 8.393 -99 15 15

HD142331 15:54:19.788 -08:34:49.37 G5V NaN 9.39 8.75 NaN NaN 7.476 -99 30 15

HD180609 19:12:47.200 +64:10:37.17 A0V NaN 9.57 9.42 NaN NaN 9.166 -99 30 30

HD209458 22:03:10.773 +18:53:03.55 G0V NaN 8.21 7.63 NaN NaN 6.591 -99 15 15

HS2027+0651 20:29:32.506 +07:01:07.70 DO NaN 16.1 16.9 16.9 NaN NaN 120 -99 -99

HZ21 12:13:56.264 +32:56:31.36 DO2 13.125 14.361 14.688 14.837 15.038 15.351 60 300 360

HZ4 03:55:21.988 +09:47:18.13 DA3.4 13.917 14.592 14.506 14.58 14.642 14.831 60 360 360

HZ44 13:23:35.263 +36:07:59.55 sdB 10.186 11.42 11.65 12 11.995 12.386 60 60 120

KF06T2 17:58:37.995 +66:46:52.11 K1.5III NaN 15.1 13.8 NaN NaN 11.899 120 360 180

KF08T3 17:55:16.216 +66:10:11.61 K0.5III NaN 14.39 13.18 13 NaN 11.585 60 300 180

LDS749B 21:32:16.233 +00:15:14.40 DBQ4 13.717 14.634 14.674 14.675 14.676 14.894 60 360 360

P177D 15:59:13.579 +47:36:41.91 G0V NaN 14.17 13.52 13.42 NaN 12.245 60 300 180

P330E 16:31:33.813 +30:08:46.40 G2V 13.576 12.972 12.917 12.564 12.212 11.769 60 180 180

SDSSJ151421 15:14:21.273 +00:47:52.81 DA1.8 NaN 15.61 16.5 16.2 NaN 16.45 120 -99 -99

SF1615+001A 16:18:14.240 +00:00:08.61 G NaN 17.24 16.75 16.35 15.93 15.26 180 -99 -99

SNAP-2 16:19:46.103 +55:34:17.86 G0-5 NaN 17.09 16.23 16.41 NaN 14.97 180 -99 -99

WD1026+453 10:29:45.295 +45:07:04.93 DA NaN 16.1 16.13 16.4 16.708 NaN 120 -99 -99

WD1327-083 13:30:13.637 -08:34:29.47 DA3.5 11.803 12.398 12.34 12.39 12.436 12.621 60 120 120

WD1657+343 16:58:51.113 +34:18:53.32 DA.9 NaN 16.12 16.1 NaN 17.054 NaN 120 -99 -99

WD2341+322 23:43:50.721 +32:32:46.73 DA3.8 NaN 13.06 12.94 13.12 13.455 13.171 60 180 180