{
  "bibcode": "2007GCN..6199....1H",
  "body": "J. P. Halpern & E. Armstrong (Columbia U.) report on behalf\nof the MDM Observatory GRB follow-up team.\n\n\"We observed the afterglow of INTEGRAL GRB 070311 in the\nR band for a second night using the MDM 1.3m telescope.\nA combined 8x600 s image with mid-epoch Mar. 12 03:33 UT\nyields R = 23.05 +/- 0.10 using the same comparison star\nas in GCN 6195.  The corresponding power-law decay index\nis -0.53 between 0.9 and 25.7 hours.  The seeing was ~1.7\".\nThere is possible evidence for emission extending ~1.5\"\nto the west of the OT.  If so, it may contribute to the\nshallow decay index.\n\nMDM images are posted at\n\nhttp://www.astro.columbia.edu/~jules/grb/070311/\n\nThis message may be cited\"",
  "circularId": 6199,
  "createdOn": 1173718747000,
  "email": "jules@astro.columbia.edu",
  "subject": "GRB 070311: MDM Optical Follow-up",
  "submitter": "Jules Halpern at Columbia U.  <jules@astro.columbia.edu>",
  "eventId": "GRB 070311"
}