Winter is coming and this also means that Orion the Hunter is again showing up on in the sky.
After three weeks of mostly clouds skies I got my APO Refractor out to do some imaging. In the meantime I also learned that ma problems with guiding and blurry stars also seem to come from very poor seeing over Innsbruck.
The following images have a sharpness value (FWHM) of 7 arcseconds for stars. Astrophotographers in better regions of the world don't bother shooting if this value goes over 4. Looking back at old images I found out that the sharpest I got from my Garden location was 3 arcseconds.
But anyway here are the three images I processed from this session. The pictures were done in true RGB color.
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 2000 times the mass of the Sun. Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula.