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 3671

GRB 050724: RTT150 optical observations
2005-07-24T22:40:13Z (19 years ago)
Rodion Burenin at IKI, Moscow <>
R. Burenin, M. Pavlinsky, R. Sunyaev (IKI), 
I. Khamitov, Z. Aslan (TUG), U. Kiziloglu (METU), A. Alpar (SabUni), 
I. Bikmaev, N. Sakhibullin (KSU/AST)


We observed the error box of GRB 050724 (Covino et al., GCN 3665) with
Russian-Turkish 1.5-m telescope (RTT150, Bakyrlytepe, TUBITAK National
Observatory, Turkey). We made a set of 600s exposures in R, starting at
18:11 UT, July 24, i.e. approximately 5.6 hours after the burst.
Observations were made at very high zenith distance (65-75 degrees) and
in poor seeing conditions (~2 arcsec).

We found no variable sources brighter than our limiting magnitude, which
is only slightly deeper than DSS.

This message may be cited.
Looking for U.S. government information and services? Visit