TITLE: GCN CIRCULAR NUMBER: 14079 SUBJECT: GRB 121212A: Maidanak optical observations DATE: 12/12/13 20:46:21 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Pozanenko (IKI), A. Sergeev (Institute of Radio Astronomy of NASU), A. Volnova (SAI MSU), O. Burhonov (UBAI), I. Molotov (KIAM) report on behalf GRB follow-up collaboration: We observed the field of Swift GRB 121212A (Grupe et al., GCN 14064) with AZT-22 telescope of Maidanak observatory starting on Dec. 12 (UT) 20:51:02 under mean seeing (FWHM) of about 1 arcsec. Totally we obtained 6 images of 600 s exposure in R filter. At the position of the OT of GRB 121212A (Kuin et al., GCN 14069; Perley and Horesh, GCN 14070; Elenin et al., GCN 14071) we marginally detected an extended object. If it will be confirmed the object might be a host galaxy of GRB 121212A. A preliminary photometry of the object: T0+ Filter, Exposure, OT (mid, d) (s) 0.60088 R 6x600 23.0 ± 0.35 is based on USNO-B1.0 nearby stars: USNO-B1.0 1680-0064718 11:51:09.04 +78:00:39.9 R2 = 16.34 USNO-B1.0 1680-0064713 11:51:05.10 +78:02:00.1 R2 = 19.35