Altair Astro 115mm Triplet.
Atik 428 mono camera.
Baader LRGB and H-a filters.
Photoline 0.79 reducer.
All mounted on a Skywatcher EQ8 and controlled with Sequence Generator Pro.
HaRGB M51- The Whirlpool Galaxy
4 hours of 10 minute Luminance exposures.
2 hours of 20 minute Hydrogen-alpha
6 x 5 minutes exposures for each RGB channel.
Total 7.5 hours exposure.
H-a data blended into both Red and luminance channels.