TITLE: GCN CIRCULAR NUMBER: 26283 SUBJECT: GRB 191123A: iTelescope optical upper limits DATE: 19/11/23 16:55:37 GMT FROM: Filipp Dmitrievich Romanov at Amateur astronomer I observed the field of GRB 191123A (Tohuvavohu et al., GCN Circular 26279) with remote telescope T21 (0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer) of iTelescope.Net in New Mexico Observatory. Two images with a luminance filter and with 120 seconds exposure time were obtained on 2019-11-23. Average time of images: 12:13:54 UT (5710 seconds after trigger; Binx1) and 12:16:38 UT (5874 seconds after trigger; Binx2). I did not detect any optical transients (magnitude limit of about 19.0 G from Gaia DR2 catalogue).