The Whirlpool Galaxy - M51

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License: Creative Commons - Attribution
Author: CajunAstro
m51-51x180-g20-o100-280x30-g42-o15_-20C-uhcs-qhy183c85f5_6-crop-v2 Nearly 5 hours of combined exposure of M51 from a metro area (Bortle 7-8 zone.) An Astronomic UHC-S filter and a Optolong L-eNhance filter were used to do the exposures. The combined image has good H alpha and enough blues to produce a normal looking image. Televue TV-85 at F/5.6 and a QHY183c for the camera, Atlas EQ-G mount


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