Swift GRB210807.74: Global MASTER-Net observations report
Abstract
MASTER-IAC robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Spain (IAC Teide Observatory) was pointed to the Swift GRB210807.74 (trigger No 1064361,05h 34m 52.18s , +22d 12m 36.4s, R=0.05) errorbox 34900 sec after notice time and 34992 sec after trigger time at 2021-08-08 03:33:49 UT, with upper limit up to 17.3 mag. The observations began at zenith distance = 79 deg. The sun altitude is -33.5 deg. The galactic latitude b = -5 deg., longitude l = 185 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1683613 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 35083 | MASTER-IAC | C | 180 | 17.3 | 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.30613....1L