Page 1 of 2 - Celestron Orange Tube 1975 C8 Cleaning and Refurbish - posted in Classic Telescopes: I just wanted to say thank you to many of the bloggers here for info on taking apart an orange tube C8 to clean the optics and bring it back to life. I purchased a circa 1975 diecast orange tube C8 recently for $300 Canadian dollars (@ $225 USD) from a person who had not kept the scope well at all. When I went to see the scope, the tripod was rusted, bolts were missing and when I...