M35 (NGC 2168)
The open cluster M35 is about the same size as the full moon, so it perfectly fits into this crop of 30 arc minutes.
In the images above and below you also see another starcluster NGC2158 which seems to consist of much smaller stars. In fact, with a distance of about 11000 lightyears, this is four tumes further apart from earth.
The next image shows the full frame in a manual edit (580mm, ASI2600MM, LRGB 1h).