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GCN Circular 22487

GRB 180314A: LCO Siding Springs observations
2018-03-14T17:03:19Z (6 years ago)
Cristiano Guidorzi at Ferrara U,Italy <>
C. Guidorzi, R. Martone (U. Ferrara), S. Kobayashi (LJMU), C.G. Mundell 
(U. Bath), A. Gomboc (U. Nova Gorica), I.A. Steele (LJMU) on behalf of a 
large collaboration report:

We observed the field of Swift GRB180314A (D'Avanzo et al. GCN 22478) on 
March 14, from 10:00 to 10:25 UT (mid time of 0.39 days post burst) with 
1-m and 2-m unit LCO telescopes in Siding Springs in the SDSS gri 
filters. We detect the optical afterglow (D'Avanzo et al.; Bolmer GCN 
22479; Lipunov et al. GCN 22481; Melandri et al. GCN 22482; Sbarufatti 
et al. GCN 22484) with the following magnitudes:

Mid time since GRB���� Exp������� Filter�������� Magnitude
(days)���������������� (s)
0.39������������������ 5x120����� SDSS-R�������� 21.5 +- 0.15
0.40������������������ 5x120����� SDSS-I�������� 21.4 +- 0.2

as calibrated against nearby Pan-STARRS stars.
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