M31 Andromeda Galaxy
M31 Andromeda Galaxy
This is our nearest similar galaxy Andromeda, was able to capture over 4 consecutive nights, July 26th-29th in RGB. I used Ha to blend in the Hydrogen regions that make for the bright purple nebula regions. Still amazes me how fast the light can be captured with a RASA at F/2. Taken with a small ASI 1600mm and Baader Ha F/2 ultra highspeed 3.5nm filter. Baader F/2 RGB filters handled the broader color spectrum as well as the ASG Photon Cage for precise tilt and alignment of the optics.
Equipment
Telescope: Celestron RASA 11 (620mm focal @ f/2.2)
Filters: Baader Ultra-Highspeed F/2 3.5nm & 4nm Filters.
Main Camera: ZWO ASI 1600mm-pro Monochrome
Tilt & BackFocus Adjuster: ASG Photon Cage
Mount: Skywatcher EQ6r-Pro
Guide Scope: William Optics 50mm Uniguide
Guide Camera: ZWO ASI 290mm-mini
Location
Location: Pendleton, Oregon
Observatory: NexDome 2.4m Automated
Bortle: 3
Long & Lat: 45.67N, -118.79 W
Shoot Parameters
Date: July 26-29, 2022
Ha: 88 x 180 seconds
Red: 281 x 30 seconds
Green: 577 x 15 seconds
Blue: 284 x 30 seconds
Calibration Bias: 20
Calibration Dark: 20
Calibration Flats: 30 for each filter
Gain: 139 on Ha and 75 for RGB
Cooling: -0
Processing Software: Stacked in Astro Pixel Processor, captured using NINA, Processed in PixInsight
