Swift GRB 230622A: 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 GRB 230622A ( A. Melandri et al., GCN 34058) errorbox 24809 sec after notice time and 25243 sec after trigger time at 2023-06-22 17:05:04 UT, with upper limit up to 17.1 mag. The observations began at zenith distance = 84 deg. The sun altitude is -17.1 deg. The galactic latitude b = -23 deg., longitude l = 6 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2226200 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 497 | MASTER- | C | 90 | 16.9 | 617 | MASTER- | C | 110 | 17.2 | 762 | MASTER- | C | 140 | 17.3 | 937 | MASTER- | C | 170 | 17.2 | 1132 | MASTER- | C | 180 | 17.3 | 1332 | MASTER- | C | 180 | 17.2 | 1532 | MASTER- | C | 180 | 16.6 | 1732 | MASTER- | C | 180 | 17.3 | 1931 | MASTER- | C | 180 | 17.3 | 2132 | MASTER- | C | 180 | 17.3 | 2356 | MASTER- | C | 180 | 17.3 | 2556 | MASTER- | C | 180 | 17.3 | 2757 | MASTER- | C | 180 | 17.3 | 2957 | MASTER- | C | 180 | 17.2 | 3296 | MASTER- | C | 180 | 17.3 | 25333 | MASTER-SAAO | C | 180 | 16.9 | 25533 | MASTER-SAAO | C | 180 | 17.1 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- June 2023
- Bibcode:
- 2023GCN.34067....1L