GCN Circular 43463
Subject
EP260119a: SAO RAS optical observations
Event
Date
2026-01-20T00:19:23Z (8 months ago)
From
Alexander Moskvitin at SAO RAS <mosk@sao.ru>
Via
Web form
A. S. Moskvitin and O. I. Spiridonova (SAO RAS)
report on behalf of GRB follow-up team.
We observed the field of the EP260119a (Jiang et al., GCN 43447;
Cheng et al., GCN 43449) with the Zeiss-1000 1m telescope
of the SAO RAS equipped with the CCD photometer. We obtained
8 x 300 sec in Ic band on on Jan. 19, 21:33:52--22:18:23 UT
(t_mid - T0 = 0.90439 days).
The OT (Fortin et al., GCN 43450; GCN 43455; Eyles-Ferris et al.,
GCN 43452) is clearly detected in our stacked frame
with the brightness of I = 20.8 +/- 0.1 (I_lim = 22.0).
This preliminary photometry is based on several nearby SDSS stars
(I-magnitudes obtained with Lupton 2005 transformation)
and is not corrected for the Galactic extinction.
Magnitudes is in Vega system.