Amateur Telescope Makers of Boston

Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://www.atmob.org/gallery/showimage.php?id=2995
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Äàòà èíäåêñèðîâàíèÿ: Sun Apr 10 06:09:20 2016
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Submitted by Gary Phillips on 05/24/2015 21:12:54

M51 whirlpool galaxy, 23May15

M51 whirlpool galaxy, ATMoB club house, 23May15.

Canon 5D mii, CLS filter
70-200mm lens + 1.4 ext
@280mm, f/5, ISO 800, (5x7 deg FOV)
4 min x 8 = 32 min total exposure

Curves and clarity adjusted in Lightroom
Stacked using Nebulosity (demo)

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