Older Redfield Scope Question
Have an older Redfield scope. It appears to have a small spot of dust/grime on the inside of eyepiece lense. Dot is about size of a small BB, but you can see it when looking through the scope. One of those things you could live with, but it would be nice to remove. Can I take the eyepiece off by loosening the locking ring and unthreading the eyepiece to expose the back of the lense for a light cleaning without causing any future fogging issues? I am wondering if the older USA Redfield scopes are nitrogen filled and if so do they have a seal between the scope body and eyepiece? Thanks for any information!