It's been three winters in the making and I'm pleased to have a complete image of this colourful expanse of dynamic nebula and star forming region :happy10:. I have a relatively short window imaging above my house before Orion sinks into a neighbours towering sycamore tree and there are so many delicious targets around Orion that I have somehwat avoided the main attraction. Nevertheless perseverance pays off eventually (ha!). Not perfect and I wish I had captured some 15s lum subs and 30s RGB subs for better detail within the core. Hey ho! More fun next year perhaps.
I found that anything longer than 180s and the stars bloomed across the pixels; however M42 is such a bright object with its incredible dynamic range, longer subs were not needed. I must have discarded a similar amount of data with funky star shapes from tree branch interference as I mistimed my capture window.
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of 1,344 ± 20 light years and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. It has a mass of about 2,000 times that of the Sun. Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula. The Orion Nebula is one of the most scrutinized and photographed objects in the night sky, and is among the most intensely studied celestial features. The nebula has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of gas and dust. Astronomers have directly observed protoplanetary disks, brown dwarfs, intense and turbulent motions of the gas, and the photo-ionizing effects of massive nearby stars in the nebula (Wikipedia).
WO321FLT at F5.6 10 Micron GM1000HPS & Avalon Linear FR QSI683wsg-8 (captured by two ccds, one of which now resides in Spain); Astrodon filters Lum 65 x 30s + 50 x 120s + 40 x 180s; RG&B 40 x 180s each channel; 10.2hrs total integration SGP & PixInsight Home observatory, Totnes, Devon, UK.