Photos taken with a new (to me) Astro-Tech AT65Q telescope, working as a 420mm f/6.5 telephoto lens. Noticeably sharper than my 400mm f/5.6 ED Nikkor, even when that lens is stopped down to its optimum f/11 aperture.
Oct 18, 2018
Young Mergansers
Common Mergansers in the Mill River behind my apartment. The white streaks connecting their eyes to their bills mark them as youngsters, hatched earlier this year. Male mergansers look like females when young and develop their distinctive dark green head and stark black & white body in their second year—but these two look different enough that I wonder if they aren't brother and sister.
Photos taken with a new (to me) Astro-Tech AT65Q telescope, working as a 420mm f/6.5 telephoto lens. Noticeably sharper than my 400mm f/5.6 ED Nikkor, even when that lens is stopped down to its optimum f/11 aperture.
Photos taken with a new (to me) Astro-Tech AT65Q telescope, working as a 420mm f/6.5 telephoto lens. Noticeably sharper than my 400mm f/5.6 ED Nikkor, even when that lens is stopped down to its optimum f/11 aperture.
