TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4493
SUBJECT: GRB060111B: RTT150, possible host galaxy
DATE:    06/01/12 06:10:18 GMT
FROM:    Irek Khamitov at TUG  <irekk@tug.tug.tubitak.gov.tr>

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

report:

     We observed field around position of optical counterpart (Perri et 
al., GCN4487, Yost et al, GCN4488) of GRB060111B (Swift trigger 176918) 
with Russian-Turkish 1.5-m telescope (RTT150, Bakyrlytepe, TUBITAK 
National Observatory, Turkey), starting at Jan. 12, 02:11UT, i.e.
~5.9 hours after the burst.

     A series of frames (13*300s exposures in R bands) were taken. We did 
not detect OT, but detect an extended source on about 5 arcsec NW from OT 
position with coordinates:
RA=  19h05m43.0s  (J2000.0)
DEC=+70d22'29."8  (J2000.0)

     Using USNO-B1 stars we estimate the following magnitude for this 
source: R=20.52+/-0.03, and limiting magnitude of combined image as: 
R~22.6

The finding chart can be found at:
http://www.tug.tubitak.gov.tr/~irekk/grb/grb060111b/grb060111B.JPG


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[GCN OPS NOTE(12jan06): See correction in Circular 4494.]