GCN Circular 35624
Subject
GRB 240123A: further SAO RAS optical observations
Date
2024-01-25T05:12:41Z (10 months ago)
From
Moskvitin Alexander at SAO RAS <mosk@sao.ru>
Via
legacy email
A. S. Moskvitin, O. A. Maslennikova, O. I. Spiridonova (SAO RAS)
report on behalf of the GRB follow-up team.
We observed the field of GRB 240123A (D'Ai et al., GCN #35602;
Scotton, GCN #35610) with the 1-m telescope of SAO RAS equipped
with the CCD photometer. We obtained 16 x 300 sec. images in Rc
band on Jan 25, 01:55:52 -- 03:30:49 UT (t_mid - T0 = 1.6511 days).
The OT (D'Ai et al., GCN #35602; Pankov et al., GCNs #35605, #35609
#35620; Sasada et al., GCN #35618) is detected in our stacked frame
with the brightness of R = 22.0 +/- 0.2.
The photometry is based on R2 magnitudes of nearby USNO-B1.0 stars.