Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 18990

GRB 160203A: TSHAO optical observations
2016-02-05T13:54:34Z (8 years ago)
Alexei Pozanenko at IKI, Moscow <>
A. Volnova (IKI), E. Mazaeva (IKI),  A. Kusakin (Fesenkov Astrophysical 
Institute),  A. Pozanenko (IKI) report on behalf of a larger GRB 
follow-up collaboration:

We observed the field of the Swift GRB 160203A (D'Avanzo et al., GCN 
18979) with Zeiss-1000 (West) 1-m telescope of Tien Shan Astronomical 
Observatory starting on Feb. 03 (UT) 20:31:45.  We obtained several 
images in R filter. We marginally (S/N ~ 2) detect afterglow  (Kruehler 
et al., GCN 18980) in a combined image. Preliminary photometry of the 
afterglow is following

Date       UT start    t-T0     Filter  Exp.    OT    Err
                        (mid, days)      (s)

2016-02-03 20:31:45    0.80045  R       21*300 23.0   0.5

The photometry is based on nearby USNO-B1.0 stars:

USNO-B1.0_id   R2
0652-0250834   18.04
0651-0249689   18.51
Looking for U.S. government information and services? Visit