GCN Circular 20605
Subject
GRB 170205A: LCO FTN observations
Date
2017-02-05T16:16:18Z (7 years ago)
From
Cristiano Guidorzi at Ferrara U,Italy <guidorzi@fe.infn.it>
C. Guidorzi (U. Ferrara), S. Kobayashi, I.A. Steele (LJMU), A. Gomboc
(U. Nova Gorica), C.G. Mundell (U. Bath) on behalf of a large
collaboration report:
We observed Swift GRB 170205A (Troja et al. GCN 20603) on February 05,
from 14:40 UT (2.0 hours since the GRB) with the 2-m LCO FTN in Hawaii
with SDSS r and i filters. We detect the optical afterglow at the
Swift-UVOT position with the following values:
Mid Time Exposure Filter Magnitude (AB)
(hours) (s)
-------------------------------------------------------
2.0 2x120 SDSS-R 20.3 +- 0.1
2.1 2x120 SDSS-I 20.0 +- 0.1
-------------------------------------------------------
as calibrated against nearby SDSS sources.