GCN Circular 22225
Subject
GRB 171205A: iTelescope optical observations
Date
2017-12-10T12:51:52Z (7 years ago)
From
Veli-Pekka Hentunen at Taurus Hill Obs,A95 <veli-pekka.hentunen@kassiopeia.net>
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
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