Astropixelprocessor to stack and photoshop to adjust. This is 1h of exposures 12 x 300 sec.

This is supernova 2021adpf in galaxy NGC5732 is a type 1a. One of the brighter (mag 13.8) current supernovas. This supernova illustrates quite nicely how it can be as bright as all the other trillion or more stars that comprise a spiral galaxy.