{
  "bibcode": "2016GCN.19919....1M",
  "body": "E. Mazaeva (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), A. Volnova (IKI), \nI. Korobtsev (ISTP)  report on behalf of larger GRB follow-up collaboration:\n\nWe observed the field of the GRB 160910A (Veres  et al., GCN 19901; Racusin \net al., GCN 19902) with  AZT-33IK telescope of Sayan observatory (Mondy) \nstarting on Sep., 12 (UT) 14:02:46. We obtained several images in R-filter. \nWe  clearly detected optical afterglow (Ugarte Postigo et al., GCN 19907; \nMalesani et al., GCN  19908; Lipunov et al., GCN  19914). Preliminary \nphotometry  of the afterglow is following\n\nDate        UT start   t-T0      Filter Exp.   OT        UpLim (3 sigma)\n                        (mid, days)       (s)\n\n2016-09-12  14:02:46   1.87506    R      32*60 19.92+/-0.05  22.2\n\n\nPhotometry is based on nearby SDSS-DR9 stars\nSDSS-DR9_id    R(Lupton transformation)\nJ144549.10+390403.4    16.86\nJ144552.78+390234.9    17.32\nJ144538.58+390535.0    18.34\nJ144541.35+390128.0    17.15",
  "circularId": 19919,
  "createdOn": 1473762641000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 160910A: Mondy optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 160910A"
}