{
  "bibcode": "2008GCN..8367....1N",
  "body": "Peter Nelson (Ellinbank, Victoria, Australia) reports to the AAVSO \nInternational High Energy Network the following optical observation of \nGRB081008 (GCN #8344 Racusin et al.; GCN #8343 Rykoff et al.):\n\nPeter Nelson has obtained a limiting magnitude on the optical afterglow of \nGRB081008 (Racusin et al., GCN #8344).  The optical afterglow position RA: \n18:39:50, Dec: -57:25:52 found by Rykoff et al. (GCN #8343) was observed \nfor a total of 480 seconds using a 0.32-meter Newtonian with an SBIG ST8XE \nCCD and an R filter.  The mid-point of the observations was 2008 Oct \n09.4150 UT, approximately 14 hours after the burst.  The afterglow was not \ndetected to an upper limit of R=18.2, using USNO-A2.0 star 0300-34687382 \n(R=11.8) as the comparison.  This upper limit is consistent with the \nR-band magnitude of R=18.46 on 2008 Oct 08.9951 observed by Cobb et al. \n(GCN #8356).\n\nA detailed report of these observations is available on the AAVSO website \nat ftp://ftp.aavso.org/grb/PeterNelson_081008_2454752.03073_.txt\n\nA fits image is available at\nftp://ftp.aavso.org/grb/PeterNelson_081008_2454752.03073_.fits\n\nThe AAVSO thanks the Curry Foundation for their continued support of the \nAAVSO International High Energy Network.",
  "circularId": 8367,
  "createdOn": 1223899486000,
  "email": "matthewt@aavso.org",
  "subject": "GRB 081008 optical upper limit",
  "submitter": "AAVSO GRB Network at AAVSO  <matthewt@aavso.org>",
  "eventId": "GRB 081008"
}