{
  "bibcode": "2020GCN.28737....1G",
  "body": "P. Gokuldass (UVI), R. Strausbaugh (UVI), N. Orange (OrangeWave Innovative\nScience, LLC), D. Morris (UVI), A. Cucchiara (UVI/College of Marin) report:\n\nWe observed the field of GRB201020A (Ambrosi et al., GCN 28696) with the\n0.5m Virgin Island Robotic Telescope (VIRT) at the University of the Virgin\nIslands' Etelman Observatory on 10-20-2020 starting at 23:11:52.3 UT (T+17.2\nhrs). We performed a series of exposures in R filter with a total exposure\nof 3140 s. The weather conditions were clear during the hours of\nobservation with an average airmass of 2.1.\n\nWe find no new source within the enhanced XRT position error circle\n(Osborne et al., 28698) and report the following 3-sigma upper limit:\n\nT_mid       ||Exposure     ||Filter      ||Limit\nT+18 hrs   ||3140s          ||R            ||>20.6\n\nThe limit is estimated from comparison to nearby USNO B1 stars and is not\ncorrected for Galactic extinction. The VIRT is still in the commissioning\nphase.\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": 28737,
  "createdOn": 1603332294000,
  "email": "priyadass.94@gmail.com",
  "subject": "GRB 201020A: VIRT optical observations",
  "submitter": "Priyadarshini Gokuldass at U. of the Virgin Islands  <priyadass.94@gmail.com>",
  "eventId": "GRB 201020A"
}