{
  "bibcode": "2020GCN.27191....1S",
  "body": "R. Strausbaugh (U. of the Virgin Islands), A. Cucchiara (U. of the Virgin Islands/College of Marin) report on behalf of a larger collaboration:\n\nWe observed Swift GRB 200224A (Ukwatta et al., GCN 27173) with the LCO 1-m Sinistro instrument at the McDonald Observatory, Texas, USA site, on February 24, from 12:01 to 12:18 UT (corresponding to 8.62 to 8.90 hours from the GRB trigger time) with the Bessel I and R filters.\n\nWe performed a series of 5x120s exposures in I and 3x120s in R. We do not detect any sources in the individual frames (nor in stacked images) in the Swift error region.  Using the USNO-B.1 catalog as reference, we obtain the following 3-sigma upper limits:\n\nR > 19.85\n\nI > 19.05\n\nR.S. is funded by NSF AST grant #1831682",
  "circularId": 27191,
  "createdOn": 1582603327000,
  "email": "robert.strausbaugh@uvi.edu",
  "subject": "GRB 200224A: LCO Upper Limits",
  "submitter": "Robert Strausbaugh at U. of the Virgin Islands  <robert.strausbaugh@uvi.edu>",
  "eventId": "GRB 200224A"
}