I’m about to leave for a star party, but had to stay up late last night to finish capturing this target, and then felt compelled to do at least a quick processing to share it with you.
Continuing last year’s exploration of the Sharpless Catalog, this is Sh2-112 in the constellation Cygnus. The main (brighter) part of this nebula is a bit small for my telescope & camera, but there is a good deal of dimmer nebulosity around it, especially on the right side in this view. And this dimmer nebulosity seems to contain all 3 of the emission lines I shoot; hydrogen, oxygen, and sulfur, thus providing some color variation.
This is 4 hours of H-alpha (used as luminence), and 2.5 hours each of O-III and S-II, all using 30 minute sub-exposures. I’m sure that more time on it would reveal a bit more detail in the dimmer parts of the nebulosity.
I’ll be back in a week – hopefully with some more images.