[AAVSO-HEN] GRB 080408A: GAO 150cm telescope Optical Observation

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
For an archive and more information on circulars visit:
http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn3_archive.html

TITLE:   GCN CIRCULAR
NUMBER:  9188
SUBJECT: GRB 080408A: GAO 150cm telescope Optical Observation
DATE:    09/04/22 10:47:58 GMT
FROM:    Kenzo Kinugasa at Gunma Astro. Obs/Japan  <kinugasa at 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