I found and bought a project Cave Astrola on the bay today. It turns out was about 50 miles from me. I spoke with the seller and he did some measurements for me. I thought it was an f5, but all of the literature I found says they never made an f5, but and f4.5.
It is in dire need of love, something I enjoy giving to these old scopes. The seller is actually coming to denver mid next week so he is going to deliver this to me for free. Double cool...............
It needs a secondary. I am not sure what size it will take. Probably something like 2.6, maybe 2.14. We'll see
A couple of noteworthy things.
The original 8" f4.5 came with an R&P focuser. It was also on a light weight student mount. This particular scope has a helical focuser, and rotating rings. Custom order maybe???
more to come...........