{
  "bibcode": "1999GCN...302....1G",
  "body": "P. M. Garnavich, K. Z. Stanek and M. R. Garcia (Harvard-Smithsonian\nCfA) report on behalf of the CfA GRB optical follow-up team:\n\nWe measured the object at RA 11:54:57.77, Decl -26:43:02.9 (J2000)\n(coordinates based on the GSC catalog), reported by Vrba et al. to be\nvariable (GCN #300), in our R-band images taken with the 1.2-meter\ntelescope at the F. L. Whipple Obs. by N. Caldwell (May 7) and\nK. J. Rines (May 8).  We find R=22.6 +/- 0.3 on average of two 15-min\nimages (May 7 03:15 UT) and R=22.5 =/- 0.3 on average of two 15-min\nimages (May 8 UT 04:48). The data were calibrated using Landolt\nstandard star RU149. This is consistent with the Vrba et al. object\nbeing non-variable.\n\nThis message is citeable.",
  "circularId": 302,
  "createdOn": 926198089000,
  "email": "kstanek@cfa.harvard.edu",
  "subject": "GRB 990506 optical observations",
  "submitter": "Krzysztof Z. Stanek at CfA  <kstanek@cfa.harvard.edu>",
  "eventId": "GRB 990506"
}