{
  "bibcode": "2020GCN.27593....1K",
  "body": "S. Klose, B. Stecklum, S. Melnikov, and A. Nicuesa Guelbenzu (all \nTautenburg) report:\n\nWe continued observing the field of GRB 200412B (Fermi GBM team, GCN \n27547) with the Tautenburg 1.34m Schmidt telescope equipped with the \nTAUKAM 6k x 6k CCD camera and the wide V-band filter (VB; Stecklum et al., \nGCN 27567, 27582; Klose et al., GCN 27575).\n\nFor the optical transient (Lipunov et al., GCN 27555, 27556) at a mean \ntime of 3.53 days post burst we measure VB = 22.29 +/- 0.11. This confirms \nthe suspected steepening of the light curve decay (Stecklum et al., GCN \n27582). Our present VB-band data imply alpha2 = 2.52 +/- 0.02 and a break \ntime of 2.04 +/- 0.02 days.",
  "circularId": 27593,
  "createdOn": 1587047146000,
  "email": "klose@tls-tautenburg.de",
  "subject": "GRB 200412B: continued Tautenburg observations",
  "submitter": "Sylvio Klose at TLS Tautenburg  <klose@tls-tautenburg.de>",
  "eventId": "GRB 200412B"
}