GCN Circular 18964
Subject
GRB 160131A: Bassano Bresciano Observatory optical observations
Event
Date
2016-01-31T20:48:03Z (10 years ago)
From
Ulisse Quadri at Bassano Bresciano Obs <oabb@ulisse.bs.it>
U.Quadri, L.Strabla and R.Girelli report:
We imaged the field of GRB 160131A (Page et al., GCN Circular 18951)
with the robotic telescope of (IAU station 565) Bassano Bresciano
Observatory, Italy (member of ISSP:Italian Supernovae Search Project)
The observations started 9.18 hour after the GRB trigger, at the end of
twilight, with our Newton telescope D=250 mm F/D=4.8
Initially weather conditions were good, but then the fog has
forbidden the observations.
We co-added 2 series of 10 exposures of 60 sec each:
Start T0 + 9.18 hour. End T0+ 9.87 hour
We clearly detect the optical counterpart (Page et al., GCN 18951;
Yurkov et al., GCN 18952; Guidorzi et al., GCN 18953;Xin et al.,
GCN 18954; Xin et al., GCN 18955; Watson et al., GCN 18956).
at the following coordinates:
05h 12m 40.37s -07d 02m 58.9s +/-2 arcsec
Photometry was performed using comparison stars with UCAC4 catalog.
in CV (clear + Jhonson V) and CR (Clear + Jhonson R) magnitudes,
and are not corrected for galactic dust extinction:
------------------------------------
JD Mag Filter SNR
------------------------------------
2457419.24025 17.360 CR 14.34
2457419.26062 17.241 CR 9.74
2457419.24025 17.671 CV 14.40
2457419.26062 17.498 CV 9.74
-------------------------------------
The images are available at:
http://www.osservatoriobassano.org/GRB.asp
The message may be cited.