{
  "bibcode": "2020GCN.27335....1K",
  "body": "D. A. Kann, M. Blazek (both HETH/IAA-CSIC), A. de Ugarte Postigo \n(HETH/IAA-CSIC, DARK/NBI), C. C. Thoene, J. F. Agui Fernandez (both \nHETH/IAA-CSIC), and V. Casanova (IAA-CSIC) report:\n\nWe observed the optical afterglow position of GRB 200306C (Lipunov et \nal., GCNs #27324, #27325; Gropp et al., GCN #27326; Jelinek et al., GCN \n#27328; Hu et al., GCN #27329; Moskvitin, GCN #27333; Izzo & Perley, GCN \n#27334) with the 1.5m telescope of the Sierra Nevada Observatory, \nGranada, Spain, in the V filter. Observations began 46 minutes after the \nGRB, and we obtained 18 x 30 s images under moonlight. We also obtained \nfour Rc images before technical problems shut down the telescope, but \nstray light from a nearby bright star precludes a detection.\n\nWe detect the afterglow in a stacked image centered 0.03985 days after \nthe GRB, at V = 19.38 +/- 0.14 mag (Vega mag).\n\nThe afterglow magnitude was measured against six comparison stars from \nthe GSC 2.3 catalog.",
  "circularId": 27335,
  "createdOn": 1583549493000,
  "email": "kann@iaa.es",
  "subject": "GRB 200306C: OSN 1.5m afterglow detection",
  "submitter": "Alexander Kann at IAA-CSIC  <kann@iaa.es>",
  "eventId": "GRB 200306C"
}