Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 22225

GRB 171205A: iTelescope optical observations
2017-12-10T12:51:52Z (6 years ago)
Veli-Pekka Hentunen at Taurus Hill Obs,A95 <>
Veli-Pekka Hentunen and Markku Nissinen (Taurus Hill Observatory,
Varkaus, Finland) report:

We have observed GRB 171205A field at iTelescope observatory (Siding
Spring, Australia) using T32  0.43-m f/6.8 astrograph. The optical counterpart
was detected at the position RA 11:09:39.6 and DEC -12:35:18.5.

The following magnitudes were obtained from the observations using
NOMAD1 0774-0294483 (V=15.610) as a comparison star:

Date                 Tmid(UT)    Filter         Exp. time     Mag         Mag.Err.
2017-12-09     17:00:25      unfiltered   10x120s      18.1 CV    0.5
2017-12-09     17:29:30      V                5x120s      17.4           0.6

This email has been checked for viruses by Avast antivirus software.
Looking for U.S. government information and services? Visit