{
  "bibcode": "2017GCN.21895....1D",
  "body": "M. Diaz, L. Macri, J.L. Nilo Castellon, B. Sanchez, C. Mendes, C. Colazo, M. Schneitter, C. Girardini, D. Garcia Lambas, M. Beroiz, A. Zadrozny, R. Camuccio, M. Castillo. J. Garcia for the TOROS collaboration\n\nWe have completed the PSF photometry of the observations of GW170817 carried out at the T80S telescope and the EABA telescope on 08/18/2017 and 08/19/2017 (GCN 21619, GCN, 21620). We calibrated our measurements using the Pan-STARRS1 catalog available at STScI, using their reported PSF magnitudes and uncertainties. The mid-point of our observations was 1.467d after the GW trigger - LIGO/Virgo G298048- (Julian Date of 2457984.495). At that time, we measured magnitudes of g=18.60, r=17.99, i=17.80 with uncertainties of +-0.02 mag.\nAdditionally with our observations utilizing the EABA telescope we obtained  r=18.78+-0.03 at 2.456d after the GW trigger -LIGO/Virgo G298048-. \n\n\n_______________________________________\nMario C. D��az\nDirector\nCenter for Gravitational Wave Astronomy and\nProfessor\nDepartment of Physics and Astronomy\nThe University of Texas Rio Grande Valley\n(956) 882-6690   FAX: (956) 882-6726\nmario.diaz@utrgv.edu    http://www.mariodiaz.org/\n______________________________________\nNo ceder Carhue al huinca. Calfucura (1873)",
  "circularId": 21895,
  "createdOn": 1505751747000,
  "email": "mario.diaz@utrgv.edu",
  "subject": "LIGO/Virgo G298048: TOROS photometry of SSS17a",
  "submitter": "Mario Diaz at U of Texas  <mario.diaz@utrgv.edu>",
  "eventId": "LIGO/Virgo G298048"
}