GCN Circular 23390
Subject
GRB 181030A: SAO RAS optical observations
Date
2018-10-30T03:51:54Z (7 years ago)
From
Moskvitin Alexander at SAO RAS <mosk@sao.ru>
A. S. Moskvitin and O. I. Spiridonova (SAO RAS)
report on behalf of larger collaboration.
We observed the field of GRB 181030A (Sonbas et al., GCNC #23389)
with the Zeiss-1000 telescope of SAO RAS (+ CCD photometer)
on the October, 30.
The observations started since 10 minutes after the trigger
(UT_start = 01:37:35, UT_end = 02:49:36).
We obtained 12 x 300 sec. images in Rc band. We detect the OT
discovered by the Swift/UVOT at the position (+/- 1"):
R. A. (2000) = 09:47:42.3
Decl. (2000) = +14:39:25.8
The OT magnitude is R = 19.12 +/- 0.03 (UT_mid = 02:13:35).
Calibrations were made against the nearby SDSS stars
(magnitudes transformed to Rc according to the Lupton, 2005).