{
  "bibcode": "2016GCN.20079....1K",
  "body": "A. Kaur (Clemson U.), G. Henson (ETSU), and D. H. Hartmann (Clemson U.)\n\nreport optical observations of GRB161017A discovered by Swift (Yurkov et al.,\nGCN Circ. 20063;Troja et al., GCN Circ. 20064).\n\n\n\nThe UVOT source described in Troja et al., GCN Circ. 20064, is at a\nposition consistent with the enhanced XRT position (Beardmore et al.,GCN\nCirc. 20067) and is  fading (Breeveld & Troja, GCN Circ. 20074) at the\npreliminary UVOT position:\n\n     RA  (J2000) =  09:31:04.60 = 142.76915 (deg.)\n\n     Dec (J2000) = +43:07:36.3  =  43.12676 (deg.)\n\nwith an estimated uncertainty of 0.42 arc sec. (radius, 90% confidence).\n\n\n\nWe observed the field on 2016-10-18.17 UT centered at 09:31:4.65\n+43:07:36.34 (J2000), imaging for 20 minutes in the Cousins R filter with\nthe 1.0m JKT telescope (SARA-RM) located on La Palma, Canary Isles, Spain.\nWe detect the fading source at an R magnitude of 17.606 +/- 0.017 using the\nAndor IkonL 2048 x 2048 CCD (11.6 x 11.6 arc min). The photometric standard\nGD71 was utilized for calibration.\n\n\n\nSARA is described at http://saraobservatory.org",
  "circularId": 20079,
  "createdOn": 1476827971000,
  "email": "hdieter@clemson.edu",
  "subject": "GRB161017A optical R band observations with SARA-RM",
  "submitter": "Dieter Hartmann at Clemson.U  <hdieter@clemson.edu>",
  "eventId": "GRB 161017A"
}