GCN Circular 17337
S. B. Pandey (ARIES Nainital India, on behalf of larger Indian GRB collaboration) The 1.04m Sampurnanand telescope at ARIES Nainital began observations of the Swift-detected GRB 150120B (D'Elia et al., GCN 17314) starting at 13:34:44 UT on 2015-01-20. Several frames in R_c pass-band 300sec each were acquired in poor sky conditions. In the co-added image (6x300 sec), we detect the optical afterglow candidate at R_c ~ 21.7+-0.1 mag to the location consistent with that reported by Perley et al. (GCN 17315), Guidorzi et al. (GCN 17316). The temporal power-law flux decay seems to follow an index of 0.7 at the epoch of our observations as reported by Perley & Cenko (GCN 17335). The photometry was performed in comparison to nearby USNO- B1 stars. This massage may be cited.