GRB 050522
GCN Circular 3456
Subject
RBO Observations of GRB050522
Date
2005-05-22T22:17:40Z (20 years ago)
From
Ron Canterna at U of Wyoming <canterna@uwyo.edu>
D. Allen, J. Silvey, and R. Canterna report on behalf of the Red Buttes Observatory Team of the FUN GRB Collaboration
We observed the position of the GRB050522 (Gotz et al., GCN 3446; Kennea et al., GCN 3452) with the Red Buttes Observatory 24-inch telescope under variable photometric conditions in RI bands on JD2453512. Within a FOV of 8 arcmin of the original INTEGRAL position (GCN 3346) and well within the refined Swift position (GCN 3452) we do not detect the afterglow or no new source down to the following limiting values:
UT Time Since Filter Limiting
Start GRB (hr) Magnitude
06:54 0:34 R 19.1
07:06 1:06 R 18.9
07:17 1:17 R 19.2
07:22 1:22 R 17.9
07:27 1:27 I 19.2
07:33 1:33 I 18.8
07:38 1:38 I 18.8
08:01 2:01 R 18.9
08:06 2:06 R 19.0
08:12 2:12 R 19.0
08:18 2:18 I 17.7
08:24 2:24 I 17.2
08:30 2:30 I 17.2
10 sigma limiting magnitudes were derived from the USNO-B1.0 catalogue and photometric transformations from Landolt standards.
GCN Circular 3459
Subject
GRB050522,optical observation
Date
2005-05-23T10:02:16Z (20 years ago)
From
Shouta Maeno at U.of Miyazaki <shouta@astro.miyazaki-u.ac.jp>
S.maeno,E.sonoda,Y.Tokunaga,M.Yamauchi
(University of Miyazaki)
"We have observed the field covering the error circle of
GRB 050522 (GCN3446 ; INTEGRAL Trigger time is 06:00:21 UT)
with the unfiltered CCD camera on the 30-cm telescope
at University of Miyazaki.
The observation was started 11:15:40 UT on May.22.
Observed field of view is 43 arcmin centered on
R.A=+13:20:38
Dec=+24:44:13
After co-adding a set of 21 images (11:15:40 - 11:55:21 UT)
of 30 sec exposures, we have compared with the USNO A2.0 catalog.
Preliminary analysis shows there is no new source brighter than
16.5 mag.