{
  "bibcode": "2009GCN.10090....1K",
  "body": "D. A. Kann, U. Laux, M. Roeder & H. Meusinger (TLS Tautenburg) report:\n\nWe observed again the afterglow of the Swift GRB 091020 (Racusin et al., \nGCN 10048) with the 1.34m Schmidt telescope of the Thueringer \nLandessternwarte Tautenburg, Germany, on the 26th of October, 5.2 days \nafter the GRB. We obtained 11 x 600 sec images in Rc before clouds shut us \ndown again. At the position of the afterglow, we detect a faint source in \nthe stacked image.\n\nWe derive the following afterglow magnitudes using the same comparison \nstar as Kann et al., GCN 10076:\n\ndt\t\tFilter\tmag\tdmag\n____________________________________\n5.213357\tRc\t23.62\t0.31\n\n\nKann et al., GCN 10076, found a single power-law decay with alpha = 1.12 \n+/- 0.06. Compared to the extrapolation of this fit, there is no \nsignificant evidence for a break yet.\n\nNo further observations are possible due to an instrument change.\n\nThis message may be cited.",
  "circularId": 10090,
  "createdOn": 1256610681000,
  "email": "kann@tls-tautenburg.de",
  "subject": "GRB 091020: Late TLS detection",
  "submitter": "Alexander Kann at TLS Tautenburg  <kann@tls-tautenburg.de>",
  "eventId": "GRB 091020"
}