TITLE: GCN CIRCULAR NUMBER: 15843 SUBJECT: GRB 140215A: T24 optical observations DATE: 14/02/15 11:01:22 GMT FROM: Veli-Pekka Hentunen at Taurus Hill Obs,A95 Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill Observatory, Varkaus, Finland) report: We have detected GRB 140215A optical afterglow at iTelescope observatory T24 (Auberry, California) using 0.61-m/6.5 astrograph and FLI-PL09000 CCD camera. The observations were started at 2014-02-15 04:33:26 (UT) and stopped at 06:05:49 (UT). Fourteen photometric V filter images and eight unfiltered images with different exposure time were made. The afterglow was detected at the following position RA 06:56:35.84 and DEC +41:47:11.5. The following magnitudes were obtained from the observations using NOMAD1 1317-0185429 (V= 13.190 and R=13.190) as a comparison star: Tmid(s)+T0 Filter Exp. time Mag Mag err. 1107 V 3x60s 17.00V 0.12 2090 V 3x120s 17.30V 0.13 3283 V 3x60s 17.96V 0.34 3678 V 3x120s 17.97V 0.21 4496 V 2x300s 18.44V 0.20 5817 unfiltered 3x60s 18.67CR 0.32 6224 unfiltered 3x120s 18.89CR 0.25 6797 unfiltered 2x300s 19.07CR 0.21 --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com