I was recently given an old Bausch & Lomb spotting scope. It is of all steel construction and was not built to be gas filled at all since it has no seals and i can take it all apart. I took it all down as far as i dared and cleaned 40 odd years of dust and gunk off of the lenses using rubbing alcohol and q-tips. I have it all back together and am wondering what else i should do before i use it? I am not an optics expert by any means should i have use some other method to clean it? Any steps i can take now to keep it from fogging up at the range.
Any advice is appreciated.
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