m51 widefield.jpg by adam stuart

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4-13-07	Adam Stuart

m51 widefield.jpg

Miami, FL

Whirlpool Galaxy M51
Spiral Galaxy IC4263
I used increasing integration times as M51 climbed higher in altitude. At 40 degrees (when I started imaging), the light pollution glow rendered total chip saturation beyond 200 seconds.

SXV-H9,2.75 arc-sec/pixel
Astronomik clear Type II filter, 20 x 180 seconds, 20 x 300 seconds, 20 x 420 seconds, all unbinned 1x1. Stellarvue Nighthawk at f/6 piggybacked on STV-guided LX200 at 1575 mm. Acquired with Astroart 3.0, aligned in AIP4WIN ver 1, sigma combined in Ray Gralak's pre-beta 11. full exif

other sizes: small medium large original auto

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