TITLE: GCN CIRCULAR NUMBER: 13178 SUBJECT: GRB 120326A: Bassano Bresciano Observatory lightcurve analisis DATE: 12/03/31 10:31:25 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs U.Quadri, L.Strabla, R.Girelli and A.Quadri report: Photometric optical measurements of GRB 120326A detected by SWIFT (trigger 518626) M. H. Siegel et al (GCNC 13105) have been done using the Schmidt telescope 0.32m F/3.1 and Starlight CCD camera HX-516 applied at direct focus. 120 sec. exposure time and 2x2 binning were used for all photos. All exposure were unfiltered. Every night flat field and dark have been captured and all images were corrected with them. In order to capture faint objects 60 shots was added before measurement MPO Canopus version 10.4.0.20 was used to perform differential photometry on the reduced images. began of period: 2012/03/26.945 - 21.3 hours after the burst. end of period: 2012/03/29.103 - 73.1 hours after the burst. ----------------- GSC1.2 STARS USED ----------------- ID: 0442901998 ID: 0442901953 ID: 0442902070 ID: 0442901970 The photometric results as follow: ------------------------- Date UTC Mag. ------------------------- 2012 03 26.94456 18.75 2012 03 26.96648 18.70 2012 03 26.98842 18.70 2012 03 27.01038 18.80 2012 03 27.03232 18.70 2012 03 27.05427 18.80 2012 03 27.07624 19.85 2012 03 27.10038 19.95 2012 03 28.03167 19.30 2012 03 28.05361 19.48 2012 03 28.05362 19.41 2012 03 28.07558 19.52 2012 03 29.02885 19.77 2012 03 29.04972 19.91 2012 03 29.07231 19.93 2012 03 29.09504 20.00 2012 03 29.10332 19.98 ------------------------- Images and analisis are available at the following address: http://www.osservatoriobassano.org/archivio/grb/GRB120326A-Trig-518626-2012-03-26.htm This message may be cited.