GCN Circular 29406
Subject
GRB 210205A: MITSuME Ishigaki optical observation
Event
Date
2021-02-05T22:01:18Z (5 years ago)
From
Takashi Horiuchi at Ishigakijima Astronomical Obs <takashi.horiuchi@nao.ac.jp>
Takashi Horiuchi, Hidekazu Hanayama (NAOJ), Katsuhiro L. Murata,
Yoichi Yatsu, Nobuyuki Kawai (Tokyo Tech) report on behalf of the
MITSuME collaboration:
We observed the field of GRB 210205A (Dichiara et al., GCN 29397)
with the optical three color (g', Rc, and Ic) CCD cameras attached to
the 105 cm Murikabushi telescope of Ishigakijima Astronomical
Observatory, Okinawa, Japan.
The observation with a series of 60 sec exposures started on
2021-02���05 11:22:29 UT (2 min after Swift BAT trigger).
We stacked the 25 images and did not find any new point sources
other than the USNO-B1.0 sources from the stacked images.
We obtained the SN = 10 limits as follows.
T0+[min] MID-UT T-EXP[sec] SN=10 limits
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2 2021-02-05T11:36:37 1500 g' > 18.7, Rc > 19.0, Ic > 17.8
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