{
  "bibcode": "1999GCN...310....1V",
  "body": "P.M. Vreeswijk, T.J. Galama, E. Rol (U. of Amsterdam), K. Pollard\n(U. of Canterbury), J. Menzies (SAAO), P. Sackett (U. of Groningen),\nK. Sahu (STScI), J. van Paradijs (U. of Amsterdam and U. of Alabama in\nHuntsville), and C. Kouveliotou (USRA/MSFC) report on behalf of the\nPLANET microlensing team and the Amsterdam/Huntsville GRB optical\nfollow-up team:\n\n\"We have observed the error box of GRB 990510 (Dadina et al. 1999; IAU\nCircular 7160) with the Sutherland 1.0m telescope (South Africa) in B\nand R (several exposures of 1200 sec) on May 10.72 UT. Comparison of\nthe images with the DSS (2nd Epoch Survey of the UK Schmidt; RG610\nfilter) reveals a bright object at RA 13:38:07.62, DEC -80:29:48.8\n(J2000; estimated positional uncertainy of about 2\"), which is not\ndetected in the DSS. By comparison with a couple of USNO stars we\nestimate R = 19.2 +- 0.3. We strongly urge further observations to be\nmade of this possible GRB counterpart.\"\n\nA finding chart can be found at http://www.astro.uva.nl/~titus/grb990510.html\n\nThis message is citeable.",
  "circularId": 310,
  "createdOn": 926368555000,
  "email": "titus@astro.uva.nl",
  "subject": "GRB 990510 optical observations",
  "submitter": "Titus Galama at U.Amsterdam  <titus@astro.uva.nl>",
  "eventId": "GRB 990510"
}