
M81, seen here at left, is a grand design spiral galaxy that forms a physical pair with irregular galaxy M82. They are separated by 150,000 light years. This is LRGB image taken with Barlow Corrector on ASA 12 inch Astrograph. Resulting focal ratio is F/6.3. Exposure times are resp. 60, 30, 30 and 30 min.
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