{
  "bibcode": "2012GCN.12915....1B",
  "body": "M. Blazek, P. Skala, R. Hudec, C. Polasek and J. Strobl\nAstronomical Institute of the Academy of Sciences of the Czech Republic\n\nWe observed the field of GRB 120202A (Mereghetti et al., GCN 12909) with \n0.5m robotic telescope D50 in Ondrejov observatory (Czech Republic). The \nobservation started at 23:45:46 UT on February 02, 2012, approx. 2 hours \nafter the INTEGRAL trigger. We report no detection of the optical \ncounterpart on the unfiltered images within the error circle given by \nSWIFT/XRT (Holland et al., GCN 12911). The upper limit of 20.5 mag in R \nband was estiated using nearby sources from GSC2.2 catalogue.\n\nThis message may be cited.\n\nThis research was made on behalf of larger cooperation and used RTS2 \nsystem.",
  "circularId": 12915,
  "createdOn": 1328467773000,
  "email": "jan@strobl.cz",
  "subject": "GRB 120202A: D50 optical limits",
  "submitter": "Jan Strobl at AI AS CR,Ondrejov  <jan@strobl.cz>",
  "eventId": "GRB 120202A"
}