{
  "bibcode": "2009GCN..8985....1P",
  "body": "D. A. Perley, W. Li, R. Chornock, and A. V. Filippenko (UC Berkeley) \nreport on behalf of the KAIT GRB team:\n\nWe continued observing the position of the optical afterglow (Chornock \net al., GCN 8979) of GRB 080313 (Mao et al., GCN 8980) with the Katzman \nAutomatic Imaging Telescope (KAIT) in unfiltered and I-band images \nlasting until 2.9 hours after the trigger.  In spite of significant \ncontamination due to scattered light from the full moon 20 degrees away, \nwe continue to (marginally) detect the afterglow in 30-second unfiltered \nand 120-second I-band exposures with a magnitude of I = 17.7 +/- 0.4 \n(calibrated relative to nearby USNO standards) at this time.\n\nGiven the usually bright late-time optical afterglow, the equatorial and \nnearly anti-sun position, and the possibility of an association with the \n  bright nearby galaxy (the second object mentioned in Berger et al., \nGCN 8984, which has a spectroscopic redshift of z=0.0235 according to \nSDSS), and the unclear high-energy classification of this object \n(Sakamoto et al., GCN 8982) we strongly encourage continued follow-up in \nspite of the presence of the nearby moon.\n\n[GCN OPS NOTE(13mar09): Per author's request, please see GCN 8988\nthat explains the mistaken sakamoto reference  and the high-energy statement\nin the last sentence, as explained in the corerction GCN 8988.]",
  "circularId": 8985,
  "createdOn": 1236951927000,
  "email": "dperley@astro.berkeley.edu",
  "subject": "GRB 090313: Sustained optical brightness",
  "submitter": "Daniel Perley at U.C. Berkeley  <dperley@astro.berkeley.edu>",
  "eventId": "GRB 090313"
}