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GCN Circular 16164

GRB 140423A, Optical Observations
2014-04-24T10:12:16Z (10 years ago)
Shashi Bhushan Pandey at ROTSE <>
S. B. Pandey, Brajesh Kumar and Aditi Agarwal (ARIES Nainital India,
on behalf of larger Indian GRB collaboration)

We observed the Swift GRB 140423A field (Sonbas et al., GCN 16142)
using 1.3m DFOT telescope at Devasthal operated by ARIES Nainital, India.
Observations were started at 14:36:07 UT on 2014-04-23 (~6 h after the
The optical counterpart of the burst (Elenin et al., GCN 16143; Kaur et
GCN 16144; Ferrante et al., GCN 16145; Chester et al., GCN 16147) was
detected in individual frames of exposure time 300s each.

The preliminary photometry is as following:

 (UT)Start     filter    exp(sec)       mag
 14:36:07     R_c       300            20.12 +/- 0.08
 14:42:50     I_c         300           19.76 +/- 0.15

The photometry was performed in comparison to nearby USNO stars.

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