Tested out doing 40 image stack and toyed around with ps plugin called OrionH Plus.

Images were taken with sigma 15mm vertical fisheys...resulting some baaad corners and starts after warping images straight with object profile on LR

But you need to start somewhere =)

Taken on fri-sat night around 4am to 4.45 am to max out the sights of milky way

Stack testing by Kari, on Flickr