The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy 21 million light-years away from Earth in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781 and was communicated that year to Charles Messier, who verified its position for inclusion in the Messier Catalogue as one of its final entries.
Image Details
📷 Exposure (L, R, G, B)
L, bin 1, 60x 180s
R, bin 1, 30x 180s
G, bin 1, 30x 180s
B, bin 1, 30x 180s

🔭 Equipment
Refractor TS86SDQ, 86 mm aperture, 450 mm focal length
Mount RainbowAstro RST-150H
QSI 6120 (Sony ICX834 sensor)
QHY mini guide scope
Orion StarShoot AutoGuider (guide camera)
Primalucelab Sesto Senso focuser
Primalucelab Eagle2 computer

💻 Software: 
(Windows 10) Sequence Generator Pro, PHD2, SkySafari, ASCOM drivers
(Mac OSX) PixInsight

Lausanne, Switzerland
Bright suburban light pollution, Class 6 of darkness in Bortle scale.
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