GCN Circular 16903
Subject
GRB 141005A: iTelescope.Net T21 Optical Observation
Event
Date
2014-10-07T12:57:06Z (11 years ago)
From
Takanori Sakamoto at AGU <tsakamoto@phys.aoyama.ac.jp>
D. Kawamura, T. Sakamoto, A. Yoshida (AGU)
We observed the field of GRB 141005A detected by Swift (trigger #614415;
D'Elia et al., GCN Circ. 16882) with the iTelescope.Net (http://www.itelescope.net)
T21 (0.43 m Planewave) telescope located at the New Mexico Skies Observatory
(NM, USA).
60 images of 20 sec exposures and 20 images of 60 sec exposures were taken in the
R filter starting from October 5 05:27:55 (UT) about 15 minutes after the trigger
and stopped on October 5 06:33:49 (UT). We do not detect the optical afterglow
both in the individual images and the stacked image at the enhanced X-ray
afterglow position (Beardmore et al., GCN Circ. 16888). The estimated five sigma
upper limit of the combined image (total exposure of 2400 sec) is ~18.4 using
the USNO-B1 catalog.