{
  "bibcode": "1999GCN...370....1D",
  "body": "Alan Diercks, Kevin Krisciunas, and Eric Deutsch (Univ. Washington)\nreport on behalf of the UW and LONEOS GRB collaborations:\n\nThe position of the possible optical counterpart to GRB 990704\nreported by Maury et al. (GCN 363) (12:19:29.29 -03:47:25.8) was\nimaged in the course of the LONEOS project approximately one month\nago, June 6, 1999.  Three 60s, un-filtered CCD exposures were taken\nwith the 60cm Schmidt telescope.  Combining these images, we detect\nthe object noted by Maury et al with an un-filtered magnitude of m =\n19.6 +/- 0.3 relative to the \"red\" magnitude of USNO-A1.0 star\nU0825_07735496.  We measure the following unfiltered magnitudes for\nthree stars from the USNO-A1.0 Catalog:\n\nUSNO number     RA(2000)    DEC(2000)   USNO     UW/LONEOS\n\t\t\t\t\tr_mag\t  mag\nU0825_07735496 12:19:33.74 -03:47:25.3  15.6     15.6 +/- 0.1 *calibrator*\nU0825_07735738 12:19:36.43 -03:47:12.6  16.5     16.8 +/- 0.1\nU0825_07735688 12:19:35.95 -03:46:32.9  16.5     16.7 +/- 0.1\n\nThis message may be cited.",
  "circularId": 370,
  "createdOn": 931215443000,
  "email": "diercks@astro.washington.edu",
  "subject": "GRB 990704, optical observations",
  "submitter": "Alan Diercks at U.Washington  <diercks@astro.washington.edu>",
  "eventId": "GRB 990704"
}