Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 7410

GRB080310: Optical observation by MITSuME telescope
2008-03-11T15:55:27Z (16 years ago)
Michitoshi Yoshida at Okayama Astrophysical Obs <>
M. Yoshida, K. Yanagisawa, Y. Shimizu, S. Nagayama, H. Toda (OAO,
NAOJ) and N. Kawai (Tokyo Tech) report on behalf of the MITSuME

We detected the optical afterglow of GRB 080310 (Cummings, et al.,
GCN 7382) in the error circle of the XRT position (Osborne et al.
GCN 7394) with the 50cm MITSuME Telescope at Okayama Astrophysical
Observatory on March 10 UT. Photometric calibration was done using
USNO-B1.0 catalog. The light curve shows a plateau at around 19:00 -
20:00 UT (about 11 hours after the trigger).
The photometric results are summarized below.

Observation date: 2008-03-10 UT

mid-UT     exp-T         g'            Rc            Ic
15:09:46   60min     20.0+-0.2     19.7+-0.3     19.1+-0.2
16:24:47   60min     20.4+-0.2     20.2+-0.2     19.5+-0.2
17:39:46   60min     20.6+-0.1     20.4+-0.2     19.8+-0.2
18:54:44   60min     20.6+-0.2     20.5+-0.1     20.2+-0.3
19:57:05   42min     20.6+-0.2     20.3+-0.1     20.0+-0.2
Looking for U.S. government information and services? Visit