GRB060111B: RTT150, Possible Host Galaxy

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.

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