i spent yesterday cleaning this filthy mirror in my planewave CDK 1000 and i thought i'd share some images.
here's how it started out. lots of dust and water stains.
i sprayed it with a spray bottle filled with soapy distilled water, and then laid out viva paper towels, then sprayed those with distilled water. notice the beach towels stuffed in the sides to catch water.
i then removed the wet paper towels and repeated this process.
next i sprayed it with distilled water, then with 91% alcohol and let it dry. the images below show water. i don't have an image of the alcohol, but it looks different - there are no beads with the alcohol, it just looks wet.
after i came back an hour later, i shined a super bright flashlight on it and noticed some streaks and things. i used alcohol and microfiber towel and gently rubbed away all of streaks and marks.
and here it is all nice and clean. next step was to clean the tertiary mirror (the secondary was pretty clean already.)
anyway, that's it. i was scared to death to do this, but it wasn't too bad at all. now i'm confident enough to do it again maybe next year when i'm sure to screw it up due to my overconfidence.