{
  "bibcode": "2017GCN.21583....1K",
  "body": "C. D. Kilpatrick, D. A. Coulter, M. R. Siebert, R. J. Foley (UCSC), B. J. Shappee, M. R. Drout, J. S. Simon, A. L. Piro (Carnegie), A. Rest (STScI)\n\nreport on behalf of the One-Meter Two-Hemisphere (1M2H) collaboration:\n\nWe obtained imaging in B, V, and i bands of SSS17a (Coulter et al., LVC GCN 21529) on 2017 Aug 19 UT with the 1-m Swope telescope at Las Campanas Observatory.  We calibrated these data using approximately 90 B, V, and i' APASS standards in the same field as SSS17a and report the following preliminary photometry:\n\nB = 18.8 mag +/- 0.1 mag\nV = 18.1 mag +/- 0.1 mag\ni = 17.4 mag +/- 0.1 mag\n\nAdditional photometry is being obtained and analyzed.",
  "circularId": 21583,
  "createdOn": 1503107676000,
  "email": "foley@ucsc.edu",
  "subject": "LIGO/Virgo G298048: Additional Swope Observations of SSS17a",
  "submitter": "Ryan Foley at UCSC  <foley@ucsc.edu>",
  "eventId": "LIGO/Virgo G298048"
}