{
  "bibcode": "2017GCN.21567....1C",
  "body": "D. A. Coulter, C. D. Kilpatrick, M. R. Siebert, R. J. Foley (UCSC), B. J. Shappee, M. R. Drout, J. S. Simon, and A. L. Piro (Carnegie)\n\non behalf of the One-Meter Two-Hemisphere (1M2H) collaboration:\n\nWe report a correction to the photometric magnitude of SSS17a announced in LVC GCN 21529.  After re-examination of the imaging and using 97 APASS i' standards for relative photometry, we conclude that the source had a brightness of i = 17.3 +/- 0.1 mag at the time of observation on UT 2017-08-17.98.  We apologize for the error.",
  "circularId": 21567,
  "createdOn": 1503076762000,
  "email": "foley@ucsc.edu",
  "subject": "LIGO/Virgo G298048: Correction to Swope photometry announced in LVC GCN 21529",
  "submitter": "Ryan Foley at UCSC  <foley@ucsc.edu>",
  "eventId": "LIGO/Virgo G298048"
}