Luminance â€“ 60x 10Min = 10 Hours
Red â€“ 30 x 3Min = 1.5 H
Green â€“ 30 x 3Min = 1.5 H
Blue â€“ 30 x 3Min = 1.5 H
Total Exposure: 14.5 Hours
Telescope: Skywatcher P250 F4.8
Camera: QSI586 Mono
Mount: ASA DDM60
Filters: Astrodon Gen2 LRGB
Software: MaximDL, Photoshop CS6.
This is my photo of the Pinwheel Galaxy M101 in LRGB
One of the big challenge when doing astrophotography from a light polluted area is taking LRGB photos, but after many hours of work Iâ€™m very happy with the outcome.
I photo during the first 2 weeks of June 2016. Itâ€™s a beautiful galaxy in Ursa Majorâ€¦right next to the handle.
The galaxy is about 21 light years away and it is 170,000 LY in diameter. It estimate with 1 Trillion stars (Wikipedia).