Fermi GRB 211027A: Global MASTER-Net observations report
Abstract
MASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB 211027A ( Fermi GBM team, GCN 31012) errorbox 20879 sec after notice time and 20909 sec after trigger time at 2021-10-27 11:40:21 UT, with upper limit up to 18.0 mag. The observations began at zenith distance = 40 deg. The sun altitude is -17.7 deg. The galactic latitude b = 12 deg., longitude l = 48 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1767399 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 20939 | 2021-10-27 11:40:21 | MASTER-Tunka | (18h 36m 12.97s , +21d 29m 21.2s) | C | 60 | 17.8 | 21118 | 2021-10-27 11:43:20 | MASTER-Tunka | (18h 45m 24.29s , +18d 22m 36.6s) | C | 60 | 16.9 | Coadd 21186 | 2021-10-27 11:44:28 | MASTER-Tunka | (18h 29m 19.97s , +18d 24m 29.9s) | C | 60 | 17.6 | Coadd 21186 | 2021-10-27 11:44:28 | MASTER-Tunka | (18h 27m 33.61s , +19d 36m 05.7s) | C | 60 | 17.9 | Coadd 21420 | 2021-10-27 11:48:22 | MASTER-Tunka | (18h 24m 11.62s , +21d 29m 09.0s) | C | 60 | 16.6 | Coadd 21492 | 2021-10-27 11:49:34 | MASTER-Tunka | (18h 49m 34.73s , +16d 30m 18.6s) | C | 60 | 16.2 | Coadd 21565 | 2021-10-27 11:50:47 | MASTER-Tunka | (18h 23m 53.87s , +22d 11m 32.4s) | C | 60 | 16.6 | Coadd 21637 | 2021-10-27 11:51:59 | MASTER-Tunka | (18h 39m 17.95s , +14d 34m 17.0s) | C | 60 | 17.0 | Coadd 21710 | 2021-10-27 11:53:12 | MASTER-Tunka | (18h 39m 32.42s , +24d 04m 40.4s) | C | 60 | 17.6 | Coadd 21710 | 2021-10-27 11:53:12 | MASTER-Tunka | (18h 37m 44.64s , +25d 15m 57.9s) | C | 60 | 18.0 | Coadd 21918 | 2021-10-27 11:56:41 | MASTER-Tunka | (18h 38m 00.98s , +20d 18m 12.5s) | C | 60 | 16.8 | Coadd 21919 | 2021-10-27 11:56:41 | MASTER-Tunka | (18h 36m 14.32s , +21d 29m 31.3s) | C | 60 | 16.9 | Coadd 21987 | 2021-10-27 11:57:49 | MASTER-Tunka | (18h 46m 24.98s , +20d 17m 10.7s) | C | 60 | 17.0 | Coadd 21987 | 2021-10-27 11:57:49 | MASTER-Tunka | (18h 43m 32.47s , +19d 35m 27.7s) | C | 60 | 16.8 | Coadd 22214 | 2021-10-27 12:01:36 | MASTER-Tunka | (19h 01m 17.87s , +18d 21m 56.9s) | C | 60 | 16.5 | Coadd 22214 | 2021-10-27 12:01:36 | MASTER-Tunka | (18h 59m 32.63s , +19d 33m 15.7s) | C | 60 | 16.8 | Coadd 22286 | 2021-10-27 12:02:49 | MASTER-Tunka | (18h 40m 18.67s , +22d 10m 29.4s) | C | 60 | 16.4 | Coadd 22576 | 2021-10-27 12:07:38 | MASTER-Tunka | (18h 23m 48.64s , +22d 11m 05.2s) | C | 60 | 16.7 | Coadd 22779 | 2021-10-27 12:11:02 | MASTER-Tunka | (18h 58m 22.62s , +20d 15m 45.8s) | C | 60 | 17.3 | Coadd Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- October 2021
- Bibcode:
- 2021GCN.31015....1L