It probably depends a lot on the instruments and processing used. This deep field image from a while back

https://webbtelescope.org/contents/media/images/2022/035/01G...

Is about 4.5k pixels(as published)/0.04 degrees (2.4 arcmin) a side so 360 degrees of that would be an image with 40 million pixel sides unless I fatfingered something in calculator.