{
  "bibcode": "2007GCN..6079....1.",
  "body": "J. S. Bloom (UC Berkeley) reports on behalf of a large group:\n\nWe began observing GRB 070208 (Sato et al. GCN 6074) with the robotic  \nIR telescope PAIRITEL at 2007-02-08 09:12:26 UTC, 1 minute 52 seconds  \nafter the trigger. Consistent with the position of the fading source  \nreported by Guidorzi et al. (GCN 6077; see also Fox et al. 6078) we  \nfind a new IR point source, offset from the nearby SDSS galaxy.  \nAstrometry of the afterglow position relative to 2MASS gives a  \nlocation of (J2000):\n\n   RA: 13:11:32.607\n   DEC: +61:57:54.37\n\n(rms uncertainty of 350 mas in both coordinates). Adopting the  \nnominal SDSS position for the center of the putative host (Mirabal et  \nal. 6075), the afterglow is offset by 2.48\" W, 2.77\" S.\n\nIn a stacked exposure from 2007-02-08 09:12:26 to 09:28:44 we find a  \npreliminary magnitude of J=17.52 +/- 0.16, Ks=16.19+/-0.18.\n\nA finder showing the XRT position (Sato et al. 6074; yellow circle),  \nSDSS sources (white squares), and the FTN optical afterglow position  \nmay be found at:\n   http://lyra.berkeley.edu/~jbloom/grb070208.ps.gz\n\nThis message may be cited.",
  "circularId": 6079,
  "createdOn": 1170932433000,
  "email": "jbloom@astron.berkeley.edu",
  "subject": "GRB 070208: Early IR detection and afterglow astrometry",
  "submitter": "Josh Bloom at UC Berkeley  <jbloom@astron.berkeley.edu>",
  "eventId": "GRB 070208"
}