{
  "bibcode": "2002GCN..1510....1H",
  "body": "A. Henden (USRA/USNO),\nJ. Greiner (MPE Garching), \nS. Klose (Thueringer Landessternwarte Tautenburg),\nN. Cardiel, J. Gallego, U. Thiele (Calar Alto Observatory), \nD. H. Hartmann (Clemson University), \nF. J. Vrba (USNO), \nA.J. Castro-Tirado (LAEFF-INTA Madrid and IAA-CSIC Granada),\nE. Pian (INAF, Astr. Obs. Trieste), and\nG. Tovmassian (OAN Ensenada, Mexico)\n \nreport on behalf of the GRACE collaboration:\n\n\nThe 130 arcsec radius error circle of the HETE burst GRB 020819 (HETE\ntrigger #2275, Seq_4; Vanderspek et al. GCN #1508) was imaged in the\nK' band on August 19/20, 23:12 UT - 0:33 UT (about 9 hrs after the\nburst), using the Calar Alto 3.5-m telescope equipped  with the Omega\nPrime near-infrared camera (1k x 1k; FOV 6.8 x 6.8 arcmin). The\nintegration time was 63 min. The limiting magnitude is about K'=20\n(+/-0.5), the seeing was about 1.5 arcsec.\n\nBased  on a visual comparison with the corresponding DSS2 red image we \nfind a best afterglow candidate at coordinates  \n\n        RA, DEC (J2000) = 23:27:31.5, 6:14:59,  +/- 1 arcsec.\n\nThis source is relatively bright in K' (we can only provide a very\nrough estimate at the moment; K' = 17.5 +/- 1) but has no counterpart on\nthe DSS 2 red image. We stress that we cannot yet rule out that this a\nred foreground star. Naturally, there are several more, progressively\nfainter, objects that are also potential candidates. \n\nFurther NIR observations are needed in order to search for a fading \nbehaviour.",
  "circularId": 1510,
  "createdOn": 1029833812000,
  "email": "jcg@mpe.mpg.de",
  "subject": "K band observation of GRB 020819",
  "submitter": "Jochen Greiner at MPI  <jcg@mpe.mpg.de>",
  "eventId": "GRB 020819"
}