By the time I’d captured a few images of M39 it was dark enough to try NGC6888, The Crescent Nebula, also in Cygnus. With a darker sky background I opted for 10 minute exposures and started at about midnight. 9 images, plus 25 flat frames later I called it a night.
Processing is entirely in PixInsight; after 6 months with this program I’m starting to get more comfortable with it, still lots to learn though and a course with Ian King later this month should hopefully help.
This picture overlaps in one corner with my earlier image of Sadr. I shall have to try stitching them together as a mosaic.