GCN Circular 37910

A. S. Moskvitin and O. I. Spiridonova (SAO RAS), report
on behalf of the GRB follow-up team.

We observed the field of  X-ray transient EP241021a (Hu et al.,
GCN 37834
Not found
 
 
) with the 1-m telescope of SAO RAS equipped with
CCD-photometer. We obtained 12 x 300 sec. images in Rc band
on October 26, 20:39:47--21:53:44 UT (t_mid - T0 = 5.6728 days).

We detect the OT (Fu et al., GCNs 37840
Not found
 
 
, 37842
Not found
 
 
; Li et al.,
GCNs 37844
Not found
 
 
, 37846
Not found
 
 
; Ror et al., GCN 37845
Not found
 
 
; Zheng et al., GCN 37849
Not found
 
 
;
Moskvitin & Spiridonova, GCN 37850
Not found
 
 
; Pugliese et al., GCN 37852
Not found
 
 
;
Pérez-Fournon et al., GCN 37858
Not found
 
 
; Bochenek & Perley, GCN 37869
Not found
 
 
;
Kumar et al., GCN 37875
Not found
 
 
; Busmann et al., GCN 37877
Not found
 
 
; J-Jin et al.,
GCN 37892
Not found
 
 
) in our stacked frame with the brightness of
R = 23.10 +/- 0.18 calibrated against nearby SDSS stars
(magnitudes converted with Lupton 2005 equations)
and not corrected for the Galactic extinction.