[rcheshire (Rowland)]

First time posting for a long time.

This is a trial using a new imaging setup for the first time. Another learning curve as I refine acquisition settings and discover the gotchas with the new equipment. Won't bore you with the details.

A modified Canon 1000D with regulated cooling (-5C last night) - unguided wide field - tracking was good...

37 lights x 120secs iso1600 (at f4.2 iso800 might be better?) under outer suburban skies. Unfortunately, cloud rolled in about 11pm.

Bias and flats - exsfos' light box did an excellent job of the flats.

No darks due to cooling - there is no discernible difference between bias and dark frames at -5C. The bias frames substitute for darks for light frame calibration and flat calibration. Without cooling I usually subtract the bias from the flats only. Leaving the dark untouched to be subtracted from the light frames. Unless scaling the darks in PixInsight.

Preprocessing with my rawprepro script, followed by deBayer align and stack in Pixinsight. Post processing in StarTools. Didn't go to a lot trouble with detail. The stars are pretty much all white and should show more colour in this region.

Lots wrong with this image - bloated stars, camera was slightly off-axis - stars out of round on the left side in particular.