{
  "bibcode": "2017GCN.21627....1C",
  "body": "D. Coward (UWA), E. Howell (UWA), R. Laugier (OCA), A. Klotz (UNS-CNRS-OCA), M. Boer  (UNS-CNRS-OCA),  I. Andreoni (Swinburne), J. Cooke (Swinburne), D. Macpherson (UWA), J. Moore (UWA) and A. Burrell (UWA) report on behalf of OzGrav and TZAC  (see acknowledgements below):\n\nWe report Zadko Telescope imaging of the transient SSS17a/DLT17ck in NGC4339 started at 2017-08-20 10:59 UT. In a preliminary analysis using background subtraction of the host galaxy NGC4339 through rotational masking, a photometric calibration using the star NOMAD-10666-0296310 (R=17.35) yields a magnitude of the optical transient R=20.05 +/- 0.15.\n\nAcknowledgments:\nThe Zadko Telescope is operated by the University of Western Australia (UWA), and was made possible by a philanthropic donation by James Zadko to UWA. The facility receives support from the ARC Centre of Excellence \"OzGrav\" for gravitational wave follow-up and discovery. Key personnel include D.Coward (Director-UWA), E. Howell (UWA), J. Moore (UWA), A. Burrel (UWA), A. Greensky, J. Kennewell with collaborators I. Andreoni and J. Cooke (Swinburne).\n\nThis observation report was done in partnership with the LIGO follow-up collaboration TZAC, which is supported by M. Boer, A. Klotz, R. Laugier, K. Noysena",
  "circularId": 21627,
  "createdOn": 1503295043000,
  "email": "eric.howell@uwa.edu.au",
  "subject": "LIGO/Virgo G298048: Zadko observations of the OT candidate SSS17a/DLT17ck",
  "submitter": "Eric Howell at U of Western Australia  <eric.howell@uwa.edu.au>",
  "eventId": "LIGO/Virgo G298048"
}