Swift GRB190821.72 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) was pointed to the Swift GRB190821.72 (trigger No 921722, 16h 40m 18.48s , -34d 1m 19.20s, R=0.05) errorbox 8 sec after notice time and 41 sec after trigger time at 2019-08-21 17:10:44 UT, with upper limit up to 18.4 mag. Observations started at twilight. The observations began at zenit distance = 3 deg. The sun altitude is -12.4 deg. The galactic latitude b = -60 deg., longitude l = 98 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1111516 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 46 | MASTER-SAAO | P\ | 10 | 16.3 | 73 | MASTER-SAAO | P\ | 10 | 16.4 | 98 | MASTER-SAAO | P\ | 60 | 17.3 | Coadd 104 | MASTER-SAAO | P\ | 20 | 16.9 | 145 | MASTER-SAAO | P\ | 30 | 17.0 | 195 | MASTER-SAAO | P\ | 40 | 17.3 | 250 | MASTER-SAAO | P\ | 150 | 17.9 | Coadd 256 | MASTER-SAAO | P\ | 50 | 17.4 | 328 | MASTER-SAAO | P\ | 60 | 17.6 | 508 | MASTER-SAAO | P\ | 270 | 18.1 | Coadd 941 | MASTER-SAAO | P\ | 490 | 18.4 | Coadd The observation and reduction will continue. The message may be cited.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- August 2019
- Bibcode:
- 2019GCN.25429....1L