North American Nebula

(fritz kleinhans)


    North American Nebula (Cygnus):
    Oct 20, 2009; Hale Hill Observatory, IN

300 mm f4.0 Sigma APO Manual Focus Lens @ f4.8, Canon-Hutech 400D, ISO 800, Losmandy GM-8, SBIG-STV & efinder autoguiding, cropped, full resolution = 3.92 arcsec/pixel.

15 x 7 min subs = 105 minutes, 5 darks.