In the reflector section of the want ads (Astro-Mart) is an ad for a 13.1" mirror & secondary/4 vane spider, metal focuser, My question to you learned Dobsoinans (sp) how difficult would it be to put these optics together? BTW the Primary is out of a Coulter Scope. Ad # 197615 if you care to check it out, I would appreciate any help or suggestions I can get, regards, John M
