The Orion Nebula – M42

The Orion Nebula – M42

The great Orion Nebula is just south of the Orion Belt  and is even just barely visible with the naked eye.  At around 1340 light years away, this is the closest star formation to earth.  It’s a stellar nursery kicking out new stars and is one of the most observed and studied nebula in the night sky.  The core is an emissions nebula and the hydrogen gets all excited and ramped up by the hot stars buried within the core.  The beauty is the hydrogen can’t retain the energy for long and release all those pretty photons for us to see.

Telescope: Celestron RASA 8 (400mm focal @ f/2)
Filters:  Baader Ultra-Highspeed F/2 3.5nm & 4nm Filters.
Main Camera:  ZWO ASI 1600mm-pro Monochrome
Mount:  Skywatcher EQ6r-Pro
Guide Scope:  William Optics 50mm Uniguide
Guide Camera:  ZWO ASI 290mm-mini

Location:  Pendleton, Oregon
Observatory:  NexDome 2.4m Automated
Bortle:  3-4
Long & Lat:  45.67N, -118.79 W

Ha: 47×30″
Oiii Filter
: 30×30″
Sii Filter: 48×30″
Red:  48×10″
Green:  48×10″
Blue: 48×10″

Calibration Bias: 20
Calibration Dark: 20
Calibration Flats

Integration Time:  ~1.44 hours total
Gain:  139 (unity) HSO – 0 for RGB
Cooling:  -20
Processing Software
:   Astro Pixel Processor, StarXTerminator, NINA, Topaz Labs, Photoshop CC