I have a 75mm Unitron refractor which is going to be 50 years old this December. It was my first telescope. The scope still functions albeit a bit worse for the ware. It actually takes pretty good pictures - I used it last January for the Lunar Eclipse https://www.astrobin...7711/B/?nc=user
The lens assembly has some "stuff" (dust, fungus?) in between the elements and I was wondering how to go about cleaning/restoring the lens. I don't know about disassembling the components - I'm concerned about getting them back together with the proper spacing/orientation/etc. The screws on the cell assembly have some sort of a coating on them which I expect is designed to hold them in place without slipping or moving. That tells me they were adjusted to a particular spacing and then locked down.
I posted this over in the Refractors group - got some good info from some folks in that group, but they suggested posting over here to try and get some Unitron-specific advice about things to be careful about when dis-assembling and re-assembling the lenses. Any other info would be greatly appreciated.
Thanks in advance for any information you can share!