Andromeda Galaxy – M31

Andromeda Galaxy – M31

Really quick evening before clouds rolled in I got a capture of our nearest neighboring galaxy.  Andromeda is slightly larger than the milky way galaxy, and is expected to collide with the milky-way… but not in the near future.

Telescope: Celestron RASA 8 (400mm focal @ f/2)
Filters:  Baader Ultra-Highspeed F/2 3.5nm & 4nm Ha, Sii, Oiii 2″ 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: 36x60″
Oiii Filter
: 44×60″
Sii Filter: 54×60″
Calibration Bias: 40
Calibration Dark: 20
Calibration Flat: 20

Integration Time:  ~2.2 hours total
Gain:  139 (unity)
Cooling:  -20
Processing Software
:   Astro Pixel Processor, StarXTerminator, NINA, PHD2, Photoshop CC