Eyepiece Cleaning (or not)
Posted 20 January 2013 - 10:36 AM
Posted 20 January 2013 - 11:43 AM
Posted 20 January 2013 - 12:42 PM
Posted 20 January 2013 - 12:50 PM
Posted 20 January 2013 - 12:52 PM
Posted 20 January 2013 - 12:57 PM
Posted 20 January 2013 - 01:07 PM
Posted 20 January 2013 - 01:25 PM
Posted 20 January 2013 - 01:56 PM
It was favorably referred to in another lens cleaning thread. The narrator quotes Televue, which indicates that lens coatings aren't very picky. Filtered Windex is one of Televue's suggested cleaners.
Posted 20 January 2013 - 02:02 PM
Posted 20 January 2013 - 04:21 PM
Posted 20 January 2013 - 06:39 PM
The only things I think to add that are important to avoid (providing you are following some of the links in this thread are 1) do not put liquid directly on the lens for fear of it leaking into the eyepiece and getting moisture on the inside of the lens; and 2) don't wait so long to clean that you have caked on dust from repeated dewing over. That is the hardest kind of dust to remove before trying to clean the lens.
Posted 20 January 2013 - 10:27 PM
Tele Vue has some recommendations for cleaning optics here.
That's the best suggestion so far.
Tele Vue are the makers of some of the best optics in the industry. It makes sense to assume they know what they're talking about. Follow their recommendations when possible. That's what I do.
Especially important is the part where they tell you to use the bare minimum amount of alcohol. That's crucial. It makes the difference between a crystal clear lens and a so-so lens. Especially for low-contrast high-resolution targets like Jupiter, you should settle for nothing short of perfectly clean eyepieces. Other targets are less demanding.
Posted 20 January 2013 - 10:30 PM
Posted 21 January 2013 - 11:02 AM
Posted 21 January 2013 - 11:15 AM
Would these methods work the same foe a bigger lens, say a corector plate on a SCT?
Does the corrector plate have the same anti-reflective coatings as a lens? For that matter, are all EP's coated the same?