GCN Circular 21644
Subject
LIGO/Virgo G298048: observations of optical counterpart candidate with CHILESCOPE observatory
Event
Date
2017-08-22T15:23:04Z (9 years ago)
From
Alexei Pozanenko at IKI,Moscow <grbgw.iki@gmail.com>
A. Pozanenko (IKI), A. Volnova (IKI), E. Mazaeva (IKI), P. Minaev (IKI),
M. Krugov (AFIF) report on behalf of IKI-GW follow-up collaboration:
We continue observation of the possible counterpart SSS17a/DLT17ck
(Coulter et al. GCN 21529; Yang et al., GCN 21531) of LIGO/Virgo
trigger G298048 (GCNs 21509, 21513) with RC-1000 telescope of
CHILESCOPE observatory. The observations carried out in clear filter
starting on Aug. 21 (UT) 23:32:09.
Preliminary Photometry of the transient SSS17a/DLT17ck is following
Date UT start MJD Filter OT Err UpLim (3 sigma)
2017-08-21 23:32:09 57987.00386 CR 18.8 0.2 22.2
The photometry is based on several nearby USNO-B1.0 stars (R2). The
photometry is still preliminary and required careful estimation of
NGC4339 influence.
We are grateful for the team of remote controlled CHILESCOPE observatory
(www.chilescope.com) for observations.