{
  "bibcode": "2017GCN.20598....1G",
  "body": "B. Gendre (UVI), N. Orange (OrangeWave Innovative Science, LLC), D. \nMorris (UVI), A. Cucchiara (UVI), D. Drost (UVI), T. Giblin (USAF\nAcademy), J. Hakkila (College of Charleston), A. Klotz (IRAP), J. Neff \n(NSF), D. Smith (UVI), J. Staff (UVI), P. Thierry (Auragne Observatory), \nR. Watlington (UVI), and L. Wentlent (UVI) report:\n\nWe observed the field of GRB 170202A (Racusin et al. GCN 20575) with the \n0.5m Virgin Island Robotic Telescope (VIRT) on February the 3rd,\nstarting at 3:16 UT (8.8 hours after the trigger), until 10:30 UT. We \nperformed a series of exposures in the clear filter. The weather \nconditions were variable with a typical estimated seeing of 2\".\n\nWe detected the afterglow observed by UVOT (Racusin et al., GCN 20575) \non a combined image (spanning times from 10h to 11.92h after the \ntrigger). Its magnitude, estimated by comparison to nearby USNO-B1 \nstars, was R = 20.8 +/- 0.3.\n\nFurther analysis is in progress.\n\nMagnitudes have not been corrected for Galactic extinction. The VIRT is \nstill in its commissioning phase.\n\nThis message can be cited.",
  "circularId": 20598,
  "createdOn": 1486160691000,
  "email": "bruce.gendre@gmail.com",
  "subject": "GRB 170202A: Etelman Observatory optical observations",
  "submitter": "Bruce Gendre at ASDC  <bruce.gendre@gmail.com>",
  "eventId": "GRB 170202A"
}