{
  "bibcode": "2008GCN..7822....1K",
  "body": "D. A. Kann, U. Laux and S. Ertel (TLS Tautenburg) report:\n\nWe observed the field of the INTEGRAL GRB 080603A (Paizis et al., GCN \n7790) with the TLS 1.34m Schmidt telescope in mediocre observing \nconditions (low airmass but high humidity and moderate transparency). We \nobtained a total of 6 x 600 sec images at mid-time June 5.023368. The \nafterglow (Gomboc et al., GCN 7788; Chornock et al., GCN 7789) is faintly \nvisible in each image. We stacked all six images. Assuming the USNOB1.0 \nstar with ID 1527-0313986 at RA = 18:37:55.186, Dec. +62:45:32.28 to have \nR1 = 16.74 mag, we measure for the afterglow:\n\ndt\tRc\tdRc\n\n1.55241\t21.39\t0.03 (statistical only)\n\nWe note the presence of a fainter source several arcseconds east of the OT \nwhich may slightly influence the photometry.\n\nIn comparison to the magnitude measured by Perley et al. (GCN 7791), this \nimplies a slow decay of alpha ~ 0.5. Further observations are warranted.\n\nThis message may be cited.",
  "circularId": 7822,
  "createdOn": 1212679360000,
  "email": "kann@tls-tautenburg.de",
  "subject": "GRB 080603A: TLS Afterglow Observation",
  "submitter": "Alexander Kann at TLS Tautenburg  <kann@tls-tautenburg.de>",
  "eventId": "GRB 080603A"
}