redid NGC 772 (Halifax)

I wanted to reshoot NGC 772. I hoped to get slightly better data from BGO, with no gradient.

Luminance only, 60 seconds subexposures, 10 stacked shots. FITS Liberator, Paint.NET. North is up; east is left.

First shot on 5 Sep '16. Then a week later. And I even tried making a full colour image. So-so results. There's a gradient in this but it is less than the 5 Sep shot. Still, it's more data to work with.