{
  "bibcode": "2021GCN.29644....1K",
  "body": "S. Klose, B. Stecklum, A. Nicuesa Guelbenzu, S. Melnikov, and S. Hoegner\n(all Tautenburg) report:\n\nWe continued observations of the field of GRB 210306A (D'Elia et al., GCN \n29597) with the Tautenburg 1.34m Schmidt telescope. For the optical \nafterglow (Simpson & D'Elia, GCN 29636; Belkin et al., GCN 29635, and \nreferences therein) we measure:\n\nMarch 07, 00:21 UT : Rc  = 20.47 +/- 0.13  (Vega mag)\n\nMarch 07, 02:12 UT : Rc  = 20.53 +/- 0.14\n\nMarch 07, 19:34 UT : Rc  > 21.2.\n\n\nData calibration followed Stecklum et al. (GCN 29604).",
  "circularId": 29644,
  "createdOn": 1615386790000,
  "email": "klose@tls-tautenburg.de",
  "subject": "GRB 210306A: Tautenburg observations",
  "submitter": "Sylvio Klose at TLS Tautenburg  <klose@tls-tautenburg.de>",
  "eventId": "GRB 210306A"
}