{
  "bibcode": "2017GCN.21194....1J",
  "body": "Martin Jelinek, Jan Strobl and Rene Hudec  (ASU CAS, Ondrejov, CZ) report:\n\nWe observed the location of the possible GRB (Swift tigger 755873, Page et\nal., GCNC 21193) with the 0.5m robotic telescope D50 located in Ondrejov,\nCzech Republic. The unfiltered CCD observations started 61s after the\ntrigger. No new or variable object is detected within and in the close\nproximity of the BAT errorbox. The limiting magnitude of our unfiltered\n24x10s combined image, which has the mean exposure time 21:40:09UT, i.e.\n8.5min post GRB, is R>19.6.",
  "circularId": 21194,
  "createdOn": 1496616866000,
  "email": "martin.jelinek@asu.cas.cz",
  "subject": "Swift Trigger 755873: D50 optical limits",
  "submitter": "Martin Jelinek at Astro.Inst-AVCR,Ondrejov  <martin.jelinek@asu.cas.cz>"
}