GCN Circular 36137

N. Pankov (HSE, IKI), R. Ya. Inasaridze (AbAO), A. Pozanenko (IKI), 
S. Belkin (IKI) report on behalf of GRB-IKI-FuN:

We observed the field of GRB 240414A (Caputo et. al., GCN 36083
Not found
 
 
) at 
redshift z=1.833 (Adami et al., GCN 36085
Not found
 
 
; de Ugarte Postigo et al., GCN 36087
Not found
 
 
) with 70-cm AS-32 telescope of Abastumani Observatory (AbAO). The observations were started on 2024-04-14 (UT) 22:06:33, i.e. ~20 hr since the Swift trigger. We took 117 frames 60 sec each in the R-filter. The optical counterpart (Schneider et al., GCN 36084
Not found
 
 
; Adami et al., GCN 36085
Not found
 
 
; de Ugarte Postigo et al., GCN 36087
Not found
 
 
; Niwano et al., GCN 36088
Not found
 
 
; Lipunov et al., GCN 36095
Not found
 
 
; Dutton et al., GCN 36097
Not found
 
 
; Peretto, GCN 36100
Not found
 
 
; Turpin et al., GCN 36101
Not found
 
 
; Karambelkar et al., GCN 36103
Not found
 
 
; Odeh et al., GCN 36111
Not found
 
 
; Pankov et al., GCN 36113
Not found
 
 
; Siegel & Caputo, GCN 36115
Not found
 
 
; de Ugarte Postigo et al., GCN 36117
Not found
 
 
; Xiong et al., GCN 36130
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; Wang et al., GCN 36131
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; Lopresti et al., GCN 36133
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) is not detected in the stacked image of 113x60 sec. Preliminary photometry is following:

Date       UT_start  t-T0     Filter Exp.   OT    err  UL(3sigma)
                    (mid, days)      (s)
2024-04-14 22:06:33  0.86281  R      113*60 n/d   n.d  21.4

The magnitudes were calibrated with nearby USNO-B1.0 stars.

The result is in agreement with observations carried out by other groups, in particular, with (de Ugarte Postigo et al., GCN 36117
Not found
 
 
) at the similar epoch.