{
  "bibcode": "2009GCN..9870....1P",
  "body": "D. A. Perley, I. K. W. Kleiser, and J. M. Rex (UC Berkeley) report:\n\nWe imaged the location of the Swift-XRT candidate afterglow (GCN 9868, \nKennea et al.) of extremely bright Fermi GRB 090902B (GCN 9866, Bissaldi \net al.) with the Nickel 1-meter telescope at Lick Observatory.  We \nmarginally detect a faint source in individual 600-second exposures at \nthe western edge of the XRT error circle with a magnitude comparable to \nthe Digitized Sky Survey limit.  This is likely the same source observed \nby the UVOT (GCN 9868, Swenson et al.).\n\nWe cannot confirm fading behavior at this time, and further observations \nare encouraged.  A finding chart showing the XRT error circle and the \nputative afterglow is available at the following URL:\n\nhttp://lyra.berkeley.edu/~dperley/090902b/090902b_lick.jpg",
  "circularId": 9870,
  "createdOn": 1251955808000,
  "email": "dperley@astro.berkeley.edu",
  "subject": "GRB 090902B: Optical afterglow candidate",
  "submitter": "Daniel Perley at U.C. Berkeley  <dperley@astro.berkeley.edu>",
  "eventId": "GRB 090902B"
}