GCN Circular 9188
Subject
GRB 080408A: GAO 150cm telescope Optical Observation
Date
2009-04-22T10:47:58Z (15 years ago)
From
Kenzo Kinugasa at Gunma Astro. Obs/Japan <kinugasa@astron.pref.gunma.jp>
K. Kinugasa, H. Takahashi, S. Honda, O. Hashimoto, H. Taguchi
(Gunma Astronomical Observatory) report:
The field of GRB 090408 (Stroh et al. GCN 9110) was observed
with the 150 cm telescope of the Gunma Astronomical Observatory.
Starting at 16:03 UT and 18.36 UT (1.03 and 2.58 hours after the
trigger), Rc and Ic frames were acquired for sets of 5 x 3-min
and 5 x 3-min exposures under a hazy sky condition.
We did not detect any new point source within the BAT error circle
to limiting magnitudes below relative to USNO-B1.0 R2 and I magnitudes.
mid-UT exp band mag.
-----------------------------------
16:12:59 5x3min Rc > 20.1
16:34:40 5x3min Ic > 19.4
27:45:46 5x3min Rc > 20.3
28:15:37 5x3min Ic > 19.3