{
  "bibcode": "2011GCN.11709....1H",
  "body": "Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill\nObservatory, Varkaus, Finland) report:\n\nGRAS 011 (Global-Rent-a-Scope, Mayhill, New Mexico) CDK20 20 \ninch (0.51 m) f/6.8 and FLI ProLine PL11002M CCD camera were used \nto detect GRB 110213A optical afterglow. The observations were started \nat 2011-02-13 05:39:52 (UT) and stopped at 2011-02-13 06:14:37 (UT). \nTwo unfiltered and one photometric R observations with 600s exposure \ntimes were made. The afterglow was detected at following position \nRA 02:51:51.42 and DEC +49:16:23.7 consistent those given by Cenko \nS.B. et al. (GCN 11706) to within positional errors.\n\nThe following magnitudes were obtained from the observations using \nNOMAD1 1392-0071642 (R = 15.230) as the comparison:\n\nTmid(s)+T0  Filter        Exp (sec)     Mag      Mag err   Limit\n1643           unfilt         600             15.6       0.1         16.9\n2306           unfilt         600             15.8       0.1         16.9\n3128           Rc            600             15.9       0.2         16.5\n\nA jpg image of the 600sec unfiltered observation is available at the following URL link:\nhttp://cutenews.kassiopeia.net/data/upimages/GRB110213A_text.jpg",
  "circularId": 11709,
  "createdOn": 1297584635000,
  "email": "veli-pekka.hentunen@kassiopeia.net",
  "subject": "GRB 110213A: GRAS011 optical observations",
  "submitter": "Veli-Pekka Hentunen at Taurus Hill Obs,A95  <veli-pekka.hentunen@kassiopeia.net>",
  "eventId": "GRB 110213A"
}