{
  "bibcode": "2007GCN..6861....1B",
  "body": "J. S. Bloom, D. A. Perley, M. Modjaz, D. Poznanski (UC Berkeley), H.- \nW. Chen (U Chicago), and J. X. Prochaska (UCSC) report:\n\n\"We have conducted preliminary imaging with the Keck I telescope  \n(+LRIS) of the afterglow seen in TAROT (Klotz et al. GCN 6860) of GRB  \n071010 (Moretti et al. 6859). In the first set of short exposures  \n(~100 sec) in R and G bands (starting at 04:48:34 UT) we detect a  \nsource near that position with a magnitude comparable to the faintest  \ndetectable DSS sources (corresponding to R~20 - 21 mag). We report a  \nrefined position (+/- 300 mas relative to USNO B1.0):\n\n       ra= 19:12:14.624 dec= -32:24:07.16 J2000\n\nThe offset from the star at 19:12:17.121, -32:24:18.65 to the  \nafterglow is 31.62\" W, 11.49 \"N. Spectroscopy is underway and reports  \nfrom that analysis are forthcoming (the continuum is detected to the  \natmospheric cutoff in the blue, implying z<~2).\"\n\nThis message may be cited.\n\nWe thank A. Klotz for helpful conversations regarding the TAROT  \nafterglow detection.",
  "circularId": 6861,
  "createdOn": 1191994635000,
  "email": "jbloom@astron.berkeley.edu",
  "subject": "GRB 071010: Keck Observations of the Afterglow",
  "submitter": "Josh Bloom at UC Berkeley  <jbloom@astron.berkeley.edu>",
  "eventId": "GRB 071010"
}