[vsnet-grb-info 2883] GRB060204: RTT150 optical observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4720
SUBJECT: GRB060204: RTT150 optical observations
DATE:    06/02/09 22:09:45 GMT
FROM:    Irek Khamitov at TUG  <irekk at tug.tug.tubitak.gov.tr>

I. Khamitov, Z. Aslan (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.),
I. Bikmaev, N. Sakhibullin (KSU/AST)
R. Burenin, M. Pavlinsky, R. Sunyaev (IKI)

report:

    The error circle of GRB 060209 (Swift-BAT Trigger 180931,
Osborne et al., GCN 4717) was  observed with Russian-Turkish
1.5-m telescope (RTT150, Bakyrlytepe, TUBITAK National Observatory,
Turkey) in R, starting on Feb. 09, 19:17 UT, i.e. ~8min after the burst.

    A series of frames (2*60s, 9*100s exposures) were taken under bad 
weather conditions. We did not detect new source. Using USNO-B1 stars we 
estimate limiting magnitude of combined image as: R~20.3

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