Chuck, Check out this article on Cloudynights.com. <A HREF="http://www.cloudynights.com/reviews2/TMB5.htm">Cloudy Nights TMB 5"</A> Some people are buying the objective lens and building a tube assembly around it. The TMB 6" refractor is a fine scope too if you don't mind the 41.6 lb OTA and have a mount to handle it. Debbie