[vsnet-grb-info 26819] INTEGRAL Weak#8825: AROMA-N Optical Observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  28922
SUBJECT: INTEGRAL Weak#8825: AROMA-N Optical Observation
DATE:    20/11/19 04:27:45 GMT
FROM:    Takanori Sakamoto at AGU  <tsakamoto at phys.aoyama.ac.jp>

M. Nakamura, K. Hasuda, T. Sakamoto (AGU)

We observed the field of INTEGRAL Weak#8625 with the 14-inch
AGU Robotic Optical Monitor for Astrophysical object - Narrow (AROMA-N)
located at the Sagamihara campus of Aoyama Gakuin University.

27 images of 60 sec exposures were taken in the R filter starting from
November 17 10:05:28 (UT) about 94 seconds after the trigger and stopped
on November 17 10:39:31 (UT).  We do not detect the optical afterglow
both in the individual images and the stacked image.  The estimated
five sigma upper limit of the combined image (total exposure of 1620 sec)
is ~16.7 mag using the USNO-B1 catalog.