{
  "bibcode": "2011GCN.12062....1V",
  "body": "A. Volnova (SAI MSU),   E. Klunko (ISTP),  A. Pozanenko (IKI) on behalf of \nlarger GRB follow up collaboration report:\n\nWe observed the optical afterglow  of the Swift   GRB 110530A (D'Avanzo et \nal, GCN 12046) with AZT-33IK telescope of Sayan observatory (Mondy) on May, \n30 between (UT) 16:06:01 - 19:14:06 (i.e. t0+0.0243 d -- t0+0.1549 days \nafter burst trigger). We took several series of 60 s exposures in R. Optical \nafterglow is detected in single images in the beginning of the observations \nwhile in the end we stacked images in 180 - 300 s combined exposures. The \nphotometry is based on the USNO-B1.0 1519-0265568 star (RA=18 48 15.86, \nDec=+61 56 15.0) assuming R=16.08.   In particular, the photometry\n\nUT (mid time), Exposure,   Filter,     OT\n18:04               5x60          R           20.25 +/- 0.06\n18:54               5x60          R           20.58 +/- 0.07\n\ncoincide with the photometry reported earlier (Andreev et al., GCN 12052).\n\nPreliminary light curve can be found at\n\nhttp://grb.rssi.ru/GRB110530A/GRB110530A_AZT33IK_lc.png\n\nOne can note a non-monotonous light curve decay with possible rebrightening \nat  0.03 d and 0.53 d and general power law decay index of about 0.9.",
  "circularId": 12062,
  "createdOn": 1307133848000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 110530A: optical observations in Mondy observatory",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 110530A"
}