TITLE: GCN CIRCULAR NUMBER: 17459 SUBJECT: GRB 150212A: Khureltogot optical upper limit DATE: 15/02/12 20:37:01 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), S. Schmalz (AIP), N. Tungalag (Research Center of Astronomy and Geophysics MAS), A. Volnova (IKI), I.Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of 150212A (Page et al., GCN 17449) with ORI-40 telescope of Khureltogot observatory on Feb., 12 starting on (UT) 11:32:28. We obtained 24 unfiltered images of 15 s exposure. We did not detect any optical counterpart in XRT error circle (Evans et al. GCN 17452). Details of the photometry are following: Date UT start t-T0 Filter Exp. uplim (3 sigma) (mid, days) (s) 2015-02-12 11:32:28 0.02739 none 24*15 15.8 The star mentioned by Cenko et al. (GCNs 17451, 17454) is visible in our combined image and have a brightness of 15.85 +/- 0.25. The photometry is based on R magnitudes of nearby USNO-B1.0 stars USNO-B1_id R2 1374-0373548 15.39 1374-0373502 14.41