TITLE:   GCN CIRCULAR
NUMBER:  36165
SUBJECT: GRB 240418A: AKO Upper Limit
DATE:    24/04/18 21:54:58 GMT
FROM:    Mohammad Odeh at Al Khatim Observatory M44 <mshodeh@gmail.com>

Mohammad Odeh (Al-Khatim Observatory, AKO, operated by the International
Astronomical Center in Abu Dhabi, UAE) and Nidhal Guessoum (American
University of Sharjah, UAE), report:

We observed the field of GRB 240418A (Siegel et al., GCN 36162) with our
0.36m f/7.7 robotic telescope.

We obtained 13x180s images using Ic filter on 18 April 2024, starting at
21:06UT, 42 minutes after the GRB trigger.

We did not detect any credible afterglow candidate within the updated XRT
position (Trigger number 1222885), down to the magnitude = 20.0 for the
stacked images.

The magnitude was estimated using the Atlas catalogue as a reference, and
it is not corrected for galactic extinction.