Swift GRB210903.58: Global MASTER-Net observations report
Abstract
MASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) was pointed to the Swift GRB210903.58 (trigger No 1071765,12h 24m 38.93s , -62d 40m 53.8s, R=0.0016) errorbox 34282 sec after notice time and 34506 sec after trigger time at 2021-09-03 23:31:41 UT, with upper limit up to 17.3 mag. Observations started at twilight. The observations began at zenith distance = 59 deg. The sun altitude is -16.1 deg. MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) was pointed to the Swift GRB210903.58 errorbox 41864 sec after notice time and 42088 sec after trigger time at 2021-09-04 01:38:04 UT, with upper limit up to 15.9 mag. The observations began at zenith distance = 84 deg. The sun altitude is -41.4 deg. The galactic latitude b = -0 deg., longitude l = 300 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1708696 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 34596 | MASTER-OAFA | C | 180 | 16.8 | 34796 | MASTER-OAFA | C | 180 | 17.3 | 36393 | MASTER-OAFA | C | 180 | 17.3 | 36831 | MASTER-OAFA | C | 180 | 16.6 | 38319 | MASTER-OAFA | C | 180 | 16.5 | 38749 | MASTER-OAFA | C | 180 | 16.9 | 40189 | MASTER-OAFA | C | 180 | 16.6 | 40622 | MASTER-OAFA | C | 180 | 16.9 | 42179 | MASTER-SAAO | C | 180 | 15.9 | 42378 | MASTER-SAAO | C | 180 | 15.6 | 42623 | MASTER-OAFA | C | 180 | 17.0 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- September 2021
- Bibcode:
- 2021GCN.30761....1L