NGC 6946 (UGC 11597, 2033+5959)

NGC 6946 (UGC 11597, 2033+5959) -- This is a well-known low-surface-brightness, face-on, Scd starburst galaxy (e.g., DeGioia-Eastwood 1985; Devereux & Young 1993). The absence of UV flux in the FOC exposure may be due in part to its low Galactic latitude (+12°), at which a factor ~ 5 extinction in 2300 Å flux is expected (Burstein & Heiles 1982).