I used to have a file on my puter all about cleaning mirrors and lenses, do you think I can find it now?
I also had a file for collimating the Tasco 4.5, can't find that either.
We use IPA all the time at work, it comes in 20 litre drums.
How many should I "borrow" LOL
I could make a fortune undercutting the chemists.....
Mike