{
  "bibcode": "2020GCN.27341....1G",
  "body": "P. Gokuldass (UVI), D. Morris (UVI), N. Orange (OrangeWave Innovative\nScience, LLC), A. Cucchiara (College of Marin), R. Strausbaugh (UVI) report:\n\n\nWe observed the field of GRB200306C (Gropp et al., GCN 27326) with the 0.5m\nVirgin Island Robotic Telescope (VIRT) at the University of the Virgin\nIslands' Etelman Observatory on 03-07-2020 starting at 01:52:04 UT (T+3.0\nhrs). We performed a series of exposures in R filter. The weather\nconditions were clear during the hours of observation and the zenith angle\nat the start of observations was 68 degrees and rising. We observed the\nSwift XRT position with a 20'x20' field of view.\n\nWe find no new source at the position of previous optical\ndetections (Lipunov et al., GCN 27325, Jelinek et al., GCN 27328,\nCastro-Tirado et al., GCN 27329, Moskvitin et al., GCN 27333, Izzo et al.,\nGCN 27334, Kann et al., 27335) and report upper limits as follows:\n\nT_mid       ||Exposure     ||Filter      ||Limit\nT+3.3 hrs      ||1025s          ||R           ||18.0\nT+4.0 hrs      ||3360s          ||R           ||19.0\n\nThe limits are estimated from comparison to nearby USNO B1 stars and are\nnot corrected for Galactic extinction. The VIRT is still in the\ncommissioning phase.\n\nThis work is supported by NASA-MUREP-MIRO grant NNX15AP95A, NSF EiR AST\nAward 1901296, and NSF HBCU-UP AST Award 1831682. This message can be cited.",
  "circularId": 27341,
  "createdOn": 1583603598000,
  "email": "priyadass.94@gmail.com",
  "subject": "GRB 200306C: VIRT optical upper limits",
  "submitter": "Priyadarshini Gokuldass at U. of the Virgin Islands  <priyadass.94@gmail.com>",
  "eventId": "GRB 200306C"
}