M51, Imaged with an
AP 10" f/14.6 Maksutov-Cassegrain
Image taken at prime focus with an AP 10" Mak-Cass, ST10E,
full size 3x20 minute exposure. Also employed was an experimental
f/11 compressor/field flattener.
Image by Roland Christen of Astro-Physics
Return to Roland Christen Images & Essays.