{
  "bibcode": "2010GCN.11253....1H",
  "body": "Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill\nObservatory, Varkaus, Finland) report:\n\nGRAS-007 PlaneWave CDK 17\" F6.8 telescope and STL-11000M CCD camera\n(Global-Rent-a-Scope, Nerpio, Spain) were used to detect GRB 100906A optical\nafterglow. The observations were started at 2010-09-07 02:13:24 (UT) and\nstopped at 2010-09-07 03:40:53 (UT). A number of unfiltered images with 120\nsec and 600 sec exposure time were made. The afterglow was detected at\nfollowing position RA 01 54 44.12 and DEC +55 37 49.4 consistent those given\nby Melandri A. et al. (GCN 11229) to within positional errors.\n\nThe following magnitude was obtained from the observations using USNO-B1.0\n1456-0062169 (R = 15.70) as the comparison:\n\n+T0 (hour)\t\tFilter\tExp (sec)\tMag\tMag err\tLimit\n\t\t\t\n13:00:24 (midpoint)\tunfiltered\t3x600s\t19.8\t0.4\t21.0\n\n\t\t\t\n\nA JPG image of the 3x600 sec observations is available at the following URL:\nhttp://cutenews.kassiopeia.net/data/upimages/GRB100906A.jpg",
  "circularId": 11253,
  "createdOn": 1283879958000,
  "email": "veli-pekka.hentunen@kassiopeia.net",
  "subject": "GRB 100906A: GRAS-007 optical observations",
  "submitter": "Veli-Pekka Hentunen at Taurus Hill Obs,A95  <veli-pekka.hentunen@kassiopeia.net>",
  "eventId": "GRB 100906A"
}