Stack of four 10-minute exposures with Canon 20Da at ISO400 and with 5-inch AP scope at f/4.5. Taken April 25.
The galaxy trio M98 (at right near the star 6 Comae), M99, the Coma Pinwheel (at bottom), and M100 (at upper left), captured in a deep blue twilight sky on June 4, 2019. The pair of NGC 4602 and NGC 4298 are left of M99 at bottom left. Images taken later under darker skies were plagued by haze moving in. Despite the bright sky galaxies as faint as magnitude 14.5 are recorded. This is a stack of 6 x 2-minute exposures at ISO 1600 with the Canon 6D MkII and Astro-Physics Traveler 105mm apo refractor at f/5.8 with the Hotech field flattener. Shot for a book illustration.
Taken April 23, 2006 with 5-inch apo refractor at f/4.5 and Canon 20Da camera at ISO400. Four 10-minute exposures average-stacked.
