{
  "bibcode": "2001GCN..1180....1R",
  "body": "James Rhoads, Andy Fruchter, and Ingunn Burud report:\n\nWe observed the location of the candidate radio counterpart\nto XRF 011130 on 2001 December 5.37 UT in the K' filter\nwith the NASA IRTF + NSFCam.\n\nWithin the combined astrometric uncertainty of the IRTF\nand radio data, which we estimate at 2\" radius, we find one\nand probably two sources.  The first is clearly the same object\nreported by Jha et al (GCNC 1179).  The second is 1.66\" to the SW\nand considerably fainter, near the detection limit for the image.\n\nPhotometric calibration is not presently available, but \nfurther observations are planned.  A very rough zero point\n(based on calibration on a different night with the same\ninstrument) suggests K=18.1 for the brighter source,\nmaking the source very red (R-K ~ 4) if this zero point\nis correct.\n\nAdditionally, we expect to improve the astrometry shortly using\ncomparison to wider field optical data.",
  "circularId": 1180,
  "createdOn": 1007615800000,
  "email": "rhoads@stsci.edu",
  "subject": "GRB 011130, K band observations",
  "submitter": "James Rhoads at STScI  <rhoads@stsci.edu>",
  "eventId": "GRB 011130"
}