[rcheshire (Rowland)]

Auto-guiding is a nice recent addition and I had hoped to get more data this month. But we need the rain.

A little more work and this is as good as it's going to get. Originally posted in the beginners section.

2.1 hours, 240 second subs at ISO 200, under a bluish LED sky.

Read noise was a problem, mostly filtered out in StarTools Heal module using the Mono dead pixel mask option.

I find the inverted L* channel makes a good saturation mask for this region.

And I am quite happy with the preprocessing using my own scripts.