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  1. #1
    Sneakinoutatnight's Avatar
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    Default Cleaning eyepieces



    Was wondering how folks clean eyepieces? Grease, from eyelashes, seems to be my biggest problem. For dust I just use clean air, but I have yet to find a good way to clean off the grease and not end up with smudges.
    Love the dark. Now if I could just do something about that moon...
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  2. #2
    DaltonSkyGazer's Avatar
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    Default

    Camel Hair brush to start. Then I use Dr. Clay's cleaning solution for optics....you can buy from OPT or make your own....google it.
    Last edited by DaltonSkyGazer; 10-04-2010 at 05:09 AM.

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  4. #3
    Joe Lalumia's Avatar
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    Default

    How about regular blue Windex and a roll of toilet paper! Spray the toilet paper not the eyepiece. Brush the lens off first.

    Don't laugh it works great. Only use the plain white toilet paper or plain white Kleenex.

    If it's good enough for Al Nagler it's good enough for me.
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    TelescopeMan Web Site

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    search for W1XWX to see my amateur radio web site

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    Default

    I started using the pre-moistened lens cleaning tissues. Walmart had the Bausch & Lomb brand, 50 for $3. Seem to work fine. If they are good enough for my plastic eyeglass lenses with multiple delicate anti-reflective coatings they should be OK for my EPs. I know others here use the Zeiss brand.
    Last edited by TCA; 10-04-2010 at 12:29 PM.

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    Default

    Ive always used a mix of pure isopropyl & distilled water & a clean small pc of a cotton tee shirt I have cut up to tiny squares just for this purpose. Cotton is about the softest thing on the Planet & no wood products in it as is in any kind of paper. Havent damaged an eyepiece yet. Its my binnoculars that have to get the cleaning every so often usually.
    Id probably send in a $700 nagler to be cleaned tho....................If I owned one that is!
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  10. #6
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    Default

    First use air or a squeeze bulb like the Giottos Rocket blower. If that doesn't work, use a mirofiber lens cloth. You will be surprised how much greae and gunk it can remove. And you can throw it in the wash when it gets dirty. Only when the "dry" method fails do you use wet cleaning. The idea is to start gently and turn up the agressiveness as you go to the next step.

    I've been using this method for the past 30 years on my $1000+ camera lenses so I guess it should be good on eyepieces too.
    Saw
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    on Mauna Kea and was hooked immediately!
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  12. #7
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    Default

    Quote Originally Posted by kingmeow View Post
    First use air or a squeeze bulb like the Giottos Rocket blower. If that doesn't work, use a mirofiber lens cloth. You will be surprised how much greae and gunk it can remove. And you can throw it in the wash when it gets dirty. Only when the "dry" method fails do you use wet cleaning. The idea is to start gently and turn up the agressiveness as you go to the next step.

    I've been using this method for the past 30 years on my $1000+ camera lenses so I guess it should be good on eyepieces too.
    that is what i was thinking but you've done it for 30 yrs. so i will feel more at ease with my first cleaning. i had a uhc/lpr filter arrive today and accidentally dropped it on the carpet by the front door, worst spot possible,no damage but a little dust and even a dog hair of all things. i have the "canned" air i use to blow dust out of circuit boards and i also have the eyeglass spray cleaner and microfiber cloth i use daily. tomorrow i am going to go out now and pickup a couple of cloths and dedicate them to telescope eyepiece only use. it is nice to know how going this route has worked out over the long term for you before i do it for the first time. i made the mistake in the past of using a soft dry wash towel to clean the composite lenses in my eye glasses and found that even with scratch coating over the course of a year i could see all kinds of swirl marks and hazing then had to replace them for a small fortune. just goes to show what may feel soft and safe to the human hand can over time cause damage to lenses of all kinds. i have been 100% loyal microfiber cloth user since. so thanks for your experience it is appreciated.
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    Default

    Obviously, you should avoid touching the lense, if you can. If you can't, then try a soft make-up or camel brush, and then maybe a squirt bottle with pure isopropyl alcohol, distilled water, and maybe some original windex (no additives like amonia), and if you need, very soft and minimal single swipe brush strokes with surgical cotton balls or plain kleenex.
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  14. #9
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    Default

    I can vouch for Astronut's method as being the regular one for optics of value.
    Don't use rubbing alcohol which is about 50% Isopropyl and water with scent and stuff - the scent leave a residue.

    Use pure from a chemist mix with water - 30% iso 70 percent water and one drop of good quality surfactant (detergent) per 1/2 litre.
    One 250ml bottle will last you 5 years
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    Default

    Regarding canned air, be careful on the orientation of the can. If angled too down, the propellent can come out as a liquid with potential damage to your glass surface. For that reason, I never use can air but rather the squeeze Giottos Rocket blower.
    Saw
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    on Mauna Kea and was hooked immediately!
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