GCN Circular 21721
Subject
GRB 170827A: REM optical/NIR observations
Date
2017-08-27T09:28:32Z (7 years ago)
From
Paolo D'Avanzo at INAF-OAB <paolo.davanzo@brera.inaf.it>
P. D'Avanzo, D. Fugazza, S. Covino (INAF/OAB) report on behalf of the REM team:
We observed the field of the short GRB 170827A (Marshall et al., GCN 21718) with the 60-cm robotic
telescope REM located at the La Silla Observatory (Chile). The observations started at 05:14:24 UT,
116 seconds after the burst, and were carried out simultaneously in the g, r, i, z and H bands.
A preliminary photometry of the first co-added images indicates that no obvious afterglow candidate
is detected within the Swift/XRT error circle (Marshall et al., GCN 21718) down to the following 3sigma
limiting AB magnitudes:
r > 19.5 at T-T0 = 720s
H > 17.5 at T-T0 = 585s
Magnitudes are in the AB system and have been calibrated with respect to the 2MASS (H-band)
and APASS (r-band) catalogues.