{
  "bibcode": "1999GCN...278....1B",
  "body": "Howard E. Bond (Space Telescope Science Institute), Kevin M. McLin (CASA,\nUniversity of Colorado), and James Rhoads (Kitt Peak National Observatory)\nreport on behalf of the KPNO GRB followup team:\n\nWe have observed the location of the LOTIS candidate optical transient\nreported by Park et al (GCN 277).  Bond has obtained a 300 second V band\nimage using the KPNO 4 meter Mayall telescope; the observation is\ncentered at 1999 March 18, 06:45 UT.\n\nMcLin observed the same field for a total of 1800 seconds in R band using\nthe KPNO 0.9 meter telescope; the observations were centered at 06:30 UT.\n\nConditions were clear with 1.6 to 1.7 arcsecond seeing.\n\nComparing our images to the digitized POSS-II red plates, we find no\ncompelling evidence for any new source above the POSS plate limit.\nThis implies an approximate limit of R>21 for any fading source\nconsistent with the location of the LOTIS candidate.\n(We have assumed that the positional uncertainty is less than 1 arcminute\nfor the LOTIS source, based on the 15 arcsecond LOTIS pixel size.  Our\nactual fields of view were 36' for the 4m and 23' for the 0.9m data, so\ncould be used to search for transients over a larger area.)\n\nOur R and V band images are both deeper than the POSS plates, and further\nCCD photometry is encouraged to see whether any fainter sources are varying.\nThe R band image and a subsection of the V band image are available\non the Web from http://www.noao.edu/noao/grb/990316.html .  Please note\nthat these images are not fully reduced; they will be replaced with\nfully reduced images when available.",
  "circularId": 278,
  "createdOn": 921763017000,
  "email": "rhoads@noao.edu",
  "subject": "GRB 990316 optical observations",
  "submitter": "James Rhoads at KPNO  <rhoads@noao.edu>",
  "eventId": "GRB 990316"
}