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Orion Nebula / M42

Classification: Orion Nebula, M42-M43- LBN972, Sh2-281, NGC1977
Constellation: Orion
Object Location: Ra 05h 36m 08s Dec -05° 22’58” (current)
Size & Distance: 65.0 x 65.0, Apx 1345 light years.

Date & Location: 12-2&3-2016 Little Blair Valley, CA
Exposure: Hubble Palette SHO, 8x15, 12x15, 9x15 + 6x3 each SHO all (bin 1x1)
Optics: Telescope Engineering Company APO110FL @ f/5.74, 631mm.
Mount: Astro-Physics 1200 GTOCP4 / ATS 10x36 pier.
Camera: FLI-ML16200 G1@-30c / FLI CFW2-7 / Guided by SBIG ST-I / w OAG.
Filters: Astrodon 50mm 3nm SII, Ha, OIII.
Software: MaxImDL 6.10, Photoshop CS5, CCDStack, Topaz Labs.

Notes: Sky conditions: Below average seeing, Calm wind, Temp from mid 40’s° to mid 20’s°
Image Field of view is 134.5x114 arcmin.

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 and is one of the most scrutinized and photographed objects in the night sky. 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.
The nebula is visible with the naked eye, it’s seen as the middle "star" in the "sword" of Orion, which are the three stars located south of Orion's Belt. (Wikipedia)