{
  "bibcode": "2022GCN.32313....1S",
  "body": "R. Strausbaugh (U. of the Virgin Islands), A. Cucchiara (College of Marin) report on behalf of a larger collaboration:\n\nWe observed the Swift GRB 220701A (Evans et al., GCN 32306) field with the LCO 1-m Sinistro instrument at the Teide Observatory, on Tenerife, on July 1, from 21:07 to 21:34 UT (corresponding to 16.25 to 16.70 hours from the GRB trigger time) with the SDSS r and i filters.\n\nWe performed a series of 3x300s exposures in r and i bands. We do not detect an optical counterpart within the XRT enhanced error region (Evans et al., GCN 32308) in either band, consistent with other non-detections (O'Connor et al., GCN 32309; Oates et al., GCN 32310; Hu et al., GCN 32311). The following upper limits are calculated using the PanSTARRS catalog as reference:\n\nr>22.9\ni>21.9\n\nThese magnitudes are not corrected for galactic extinction.\n\nR.S. is funded by NSF AST grant #1831682",
  "circularId": 32313,
  "createdOn": 1656725865000,
  "email": "robert.strausbaugh@uvi.edu",
  "subject": "GRB 220701A: LCO Optical Upper Limits",
  "submitter": "Robert Strausbaugh at U. of the Virgin Islands  <robert.strausbaugh@uvi.edu>",
  "eventId": "GRB 220701A"
}