Van Vleck Observatory's 20-inch Clark
March 2005 |
20" Alvan Clark refractor, built in 1922. Originally the college ordered an 18" when the World War I broke out. What was delivered after the war ended was a 20" scope for the same price!
20" Alvan Clark refractor, built in 1922. Originally the college ordered an 18" when the World War I broke out. What was delivered after the war ended was a 20" scope for the same price!
