{
  "bibcode": "2013GCN.14592....1K",
  "body": "D. A. Kann, B. Stecklum, and F. Ludwig (TLS Tautenburg) report:\n\nWe observed the optical afterglow (Elenin et al., GCN 14450) of the nearby\n(Levan et al., GCN 14455), extremely bright GRB 130427A (Maselli et al.,\nGCN 14448; Zhu et al., GCN 14471; von Kienlin, GCN 14473; Golenetskii et\nal., GCN 14487) with the 1.34m Schmidt telescope of the Thueringer\nLandessternwarte Tautenburg equipped with a 4k CCD camera under good\nweather conditions. We obtained 3 x 600 sec frames in the Rc band. The\nafterglow is detected in each frame.\n\nUsing the nearby star given in Rumyantsev et al. (GCN 14582), we derive a\npreliminary magnitude of Rc = 20.27 +/- 0.07 at 8.55173 days after the\nGRB.\n\nThis value is in good agreement with detections from the last few days\n(Kuroda et al., GCN 14534; Rumyantsev et al., GCN 14582). The afterglow\ndoes not yet show clear signs of flattening associated with either a\nrising supernova component or a significant contribution from the\nunderlying host galaxy.\n\nThis message may be cited.",
  "circularId": 14592,
  "createdOn": 1367880093000,
  "email": "kann@tls-tautenburg.de",
  "subject": "GRB 130427A: Tautenburg afterglow observations",
  "submitter": "Alexander Kann at TLS Tautenburg  <kann@tls-tautenburg.de>",
  "eventId": "GRB 130427A"
}