GRB 200528A: Assy optical upper limit
Abstract
We observed GRB 200528A (Fermi GBM Team GCN 27831; Ambrosi et al., GCN 27832) with AZT-20 1.5 m telescope of Assy-Turgen observatory starting on May., 28 (UT) 16:16:12. We do not detect any sources in the Swift-XRT extended position (Evans et al., GCN 27836). Preliminary photometry of the field is following. Date UT start t-T0 Filter Exp. OT Err. UL (3sigma) (mid, days) (s) 2020-05-28 16:16:12 0.26777 r(AB) 54*60 n/d n/d 22.4 The photometry is based on the nearby stars of SDSS catalog SDSS-DR12_id r J114613.33+581329.5 19.455 J114632.90+581307.2 19.190 J114549.81+581044.3 19.004 J114600.53+580839.6 16.985
- Publication:
-
GRB Coordinates Network
- Pub Date:
- May 2020
- Bibcode:
- 2020GCN.27849....1B