GCN Circular 37907
Subject
EP 241026b: LBT optical observations
Date
2024-10-27T12:56:36Z (5 days ago)
From
Daniele B. Malesani at IMAPP / Radboud University <d.malesani@astro.ru.nl>
Via
Web form
Daniele B. Malesani (DAWN/NBI and Radboud Univ.), Andrea Rossi (INAF/OAS), Olga Kuhn (LBTO) and Felice Cusano (INAF/OAS) report on behalf of a larger collaboration:
We observed the field of the X-ray transient EP 241026b (Lian et al., GCN 37902) using the Large Binocular Telescope (LBT) located on Mount Graham (AZ, USA), equipped with the MODS instrument. Two images (120 s exposure each) were secured in the r and g bands, beginning at 09:50 UT on October 27, that is 15.6 hr after the EP/WXT trigger.
Visual comparison with archival images from Pan-STARRS reveals no new source within the 2.9'-radius error circle provided by EP/WXT, down to the Pan-STARRS depth of r ~ 23 (AB). We note that our image reaches deeper than that, and fainter counterparts may be retrieved once a better reference image is available.