Fermi trigger No 651306769: Global MASTER-Net observations report
Abstract
MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB210822.27 (trigger No 651306769,22h 53m 48.00s , -46d 18m 00.0s, R=2.08) errorbox 44653 sec after notice time and 65943 sec after trigger time at 2021-08-23 00:51:47 UT, with upper limit up to 17.9 mag. The observations began at zenith distance = 21 deg. The sun altitude is -53.7 deg. The galactic latitude b = -60 deg., longitude l = 345 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1697119 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 65973 | 2021-08-23 00:51:47 | MASTER-SAAO | (23h 04m 07.16s , -48d 22m 25.3s) | C | 60 | 17.9 | 66954 | 2021-08-23 01:08:08 | MASTER-SAAO | (23h 04m 08.51s , -48d 23m 38.3s) | C | 60 | 17.9 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- August 2021
- Bibcode:
- 2021GCN.30690....1L