{
  "submitter": "Martin Jelinek at Astro.Inst-AVCR,Ondrejov <martin.jelinek@asu.cas.cz>",
  "subject": "GRB 230506C: Candidate afterglow observation by D50",
  "createdOn": 1683416686141,
  "eventId": "GRB 230506C",
  "bibcode": "2023GCN.33735....1J",
  "circularId": 33735,
  "body": "M. Jelinek, J. Strobl, R. Hudec, C. Polasek (ASU CAS Ondrejov) report:\n\nWe observed the position of the Swift-detected GRB 220506C (Tohuvavohu et\nal.\nGCNC 33731) with the D50 telescope of the Astronomical Institute Ondrejov,\nnear\nPrague, Czech Republic. Our observation started at 19:58 UT, i.e. 2.8 h\nafter\nthe initial trigger and was performed with an SDSS i' filter.\n\nWe confirm the presence of an object not present in the SDSS survey\nreported by\nPankov et al. (GCNC 33734) in a combined image with exp. mean time ~4.0 h\nafter\ntrigger (exposed 19:58--22:35UT). The AB magnitude of the object in this\nframe\nis i' = 20.54 +/- 0.11.\n"
}