GCN Circular 22401
Subject
GRB 180205A optical observations
Event
Date
2018-02-07T10:52:14Z (9 years ago)
From
Arto Oksanen at Nyrola Obs., Finland <oksanen@nyrola.jklsirius.fi>
Arto Oksanen (Hankasalmi Obs., Hankasalmi, Finland) and D. Malesani (DARK/NBI)
report the following observations of GRB 180205A (Evans et al., GCN 22381):
A. Oksanen observed the location of GRB 180205A using the Hankasalmi
Observatory 0.4-m Richey-Chretien telescope with an SBIG STL-1001E
camera. Forty 60-second frames were obtained with clear filter
between 18:19 UT and 19:41 UT on 2018 February 5.
The afterglow is detected in co-added image.
Photometry of co-added image yields the following:
t-t0(d) m(CR) err(CR)
0.605 19.43 0.06
Photometry was performed using comparison stars from the Pan-STARRS survey
(Chambers et al. 2016; arXiv:1612.05560), after adopting the conversion
formulae by Lupton (2005).