{
  "bibcode": "2012GCN.13199....1V",
  "body": "A.Volnova (SAI MSU), �I. Korobtsev, E. Klunko (ISTP), A. Pozanenko\n(IKI) on behalf of �larger GRB follow up collaboration report:\n\nWe observed the field of the Swift GRB 120320A �(Markwardt �et al.,\nGCN 13071) with AZT-33IK telescope of Sayan observatory (Mondy) �on\nMar. 20 under mean seeing 2.6 arcsec. We took several images in\nR-filter of �60 s exposure on Mar.20, between (UT) 14:45:13 -\n15:58:25.\n\nWithin enhanced XRT position (Beardmore et al., �GCN 13075) we do not\ndetect any �source in a combined image. Photometry is based on nearby\nUSNO-B1.0 stars, R2-values.\n\nUT start, � �t-t0 � � � � � filter � � �Exp. � � � �OT � � �UL (3 sigma)\n� � � � � � � (mid, days) � � � � � � (s)\n\n14:45:13 � 0.14275 � �R � � � 72x60 � � � � n/d � � �21.3",
  "circularId": 13199,
  "createdOn": 1333477511000,
  "email": "alinusss@gmail.com",
  "subject": "GRB 120320A: optical upper limit in Mondy observatory",
  "submitter": "Alina Volnova at SAI MSU  <alinusss@gmail.com>",
  "eventId": "GRB 120320A"
}