{
  "bibcode": "2001GCN..1139....1H",
  "body": "J. P. Halpern, N. Mirabal (Columbia), C. Burke, D. L. DePoy (Ohio State), &\nS. Gaudi (IAS), report on behalf of the MDM Observatory GRB follow-up team:\n\n\"Using the MDM 2.4m, we reobserved this location in the I band on Nov. 9.23 UT.\nIn two 8 minute exposures in seeing of 1.2 arcseconds, there is a possible\ndetection at the 2 sigma level of an object at position (J2000) 20:43:31.94,\n+77:17:19.0, which is 1.2 arcseconds west of the position reported for the new \nradio source that appeared on Nov 8.80 (Taylor et al. GCN #1136).  Assuming\nfor a calibration that the faintest objects on the POSS-II IVN plates have \nI=19.5, this possible counterpart would have I=22.5.  Given the marginal\nlevel of this detection and its absence on previous images of comparable\ndepth on Nov. 1, confirmation would be required.  Alternatively, this may\nbe considered an upper limit to the optical brightness of the radio source.\n\nThe new image is posted at\nhttp://www.astro.columbia.edu/~jules/grb/011030\n\nThis message may be cited.\"",
  "circularId": 1139,
  "createdOn": 1005334174000,
  "email": "jules@astro.columbia.edu",
  "subject": "GRB 011030 I-band Observation",
  "submitter": "Jules Halpern at Columbia U.  <jules@astro.columbia.edu>",
  "eventId": "GRB 011030"
}