The dark nebula CG4 in the constellation Puppis. This nebula’s "claim to fame" is that is resembles a worm-like creature about to devour a galaxy! (PGC21338). While very much a dark nebula, the presence of H-alpha gives the nebula a distinct red glow that only adds to the character. I recall seeing this property in another dark nebula I imaged in 2022 called LDN1622 (Boogieman nebula). With that in mind, I decided to acquire some H-alpha data, which was then blended into the broadband luminosity data to enhance some of the more H-alpha specific details.
Represented in HaLRGB.
Link to the image in Astrobin (much better resolution)
https://www.astrobin.com/sg99yn/
Skywatcher 10" F4 Quattro, Tele Vue Paracorr II coma corrector, NEQ6 mount (hypertuned, belt modded), QHY268M (SGP software), QHYCFW3M (7x36mm), QHYOAG Medium, QHY5-III 178M guide camera (PHD2 guiding), Antlia 3nm H-alpha narrowband filter (36mm unmounted), Antlia RGB filters (36mm unmounted). Stacked/Registered with Deep Sky Stacker/Registar (calibration frames included), post-processing in Photoshop CC.
