Cleaning my corrector plate

When my secondary mirror holder came loose (when I attached the hyperstar lens), I ended up with a few finger prints on my corrector plate :-(

Of course, blowing some air or using a soft brush won't work here, so I worked on the solution from the Arkansas Sky Observatory:

• Distilled water
• "Pure" (aka 91+%) isopropyl alcohol (Amazon)
• Coffee filters (need to buy - we only have an espresso machine)
• Regular ("Blue") Windex - the site was explicit to only use that one. Need to buy
• Kodak PhotoFlo (Amazon)
• Synthetic Cotton Replacement Pads (Intrinsics Synthetic Wipes - Opt Telescopes)
• Kwazar Spray Bottles (Amazon)
• Box of pure white Kleenex
• Sterile Eye Dropper (Amazon)
• Surgical Cotton Gloves (Amazon)

I ended up being lazy and bought everything from Amazon (plus, some of the items were "Add-On" items, i.e. they only get shipped with orders of $25+).

After I received all the ingredients, I mixed the two solutions together. And then followed the instructions carefully - they were super helpful!

Before:	After:

Looks pretty good. And breathing on it doesn't show any streaks!