[vsnet-grb-info 23753] GRB 190926A: KAIT Optical Upper Limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  25852
SUBJECT: GRB 190926A: KAIT Optical Upper Limit
DATE:    19/09/26 20:22:19 GMT
FROM:    Weikang Zheng at UC Berkeley  <weikang at berkeley.edu>

WeiKang Zheng and Alexei V. Filippenko (UC Berkeley) report on
behalf of the KAIT GRB team:

The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at
Lick Observatory, responded to Swift GRB 190926A (Melandri et al.,
GCN 25848) starting at ~59 minutes after the burst. Observations
were performed in the clear (roughly R) filters, a total of 102
images were obtained and the exposure time was 60 s per image.
We do not detect any optical afterglow candidate within the Enhanced
XRT position error circle (Goad et al., GCN 25850), neither in single
image, nor in the co-add images. The typical limiting magnitude
of our single clear image is about 19.0 mag.