{
  "bibcode": "2015GCN.18275....1M",
  "body": "A.S.Moskvitin (SAO RAS), V.P.Goranskij (SAI, Moscow State University),\nreport on behalf of larger GRB follow-up team:\n\nWe observed the field of the GRB 150910A (Pagani et al., GCN #18264)\nwith the Zeiss-1000, 1-meter telescope of SAO RAS (Russia),\nequipped with the broadband filters UBVRcIc and EEV 42-40 CCD.\nThe observations started since 10.85 hours after the trigger.\n\nWe obtained sets of 6 x 300-sec. frames in Rc band three times per\nSeptember, 10/11 night. The OT (reported by Pagani et al., GCN #18264;\nZheng & Filippenko, GCN #18265; Dichiara et al., GCN #18266;\nKuroda et al., GCN #18267; Xu et al., GCN #18269; McCauley & Pagani,\nGCN #18270; Zheng et al., GCN #18273; de Ugarte Postigo et al.,\nGCN #18274) is clearly visible even in single frames.\nThe results of observations are as following.\n\n#   (T_mid-T0),h   exp.,s     R_mag            time, UT\n1.  11.035         6 x 300    20.20 +/- 0.05   19:56:03--20:17:48\n2.  13.448         6 x 300    20.57 +/- 0.05   22:15:17--22:48:09\n3.  15.739         6 x 300    20.78 +/- 0.05   00:32:30--01:05:46\n\nPhotometry is based on nearby SDSS stars (their magnitudes\nwere converted with the Lupon 2005 equations).",
  "circularId": 18275,
  "createdOn": 1441937217000,
  "email": "mosk@sao.ru",
  "subject": "GRB 150910A: SAO RAS optical photometry",
  "submitter": "Moskvitin Alexander at SAO RAS  <mosk@sao.ru>",
  "eventId": "GRB 150910A"
}