Re: Rating Newtonian Mirrors

jameswilliamjohnson_at_yahoo.com
Date: 03/15/05 

Date: 15 Mar 2005 12:15:07 -0800

Mark Harry is reported to make good mirrors (5 to 12", including longer
focus planetary scopes). Sometimes the mirror ratings can seem pretty
high but he uses rouge for the final figuring and emphasizes a smooth,
zone-free parabaloid - which is very important.

Jim Johnson