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Thread: Coatings

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    Default Coatings



    Hi all , This is for people that dont know about eyepiece coatings ...

    What the coatings do is let more light pass through the lens , which is what astronomers want , more light passing through there lenses .. This also holds true for diagnols and barlows .

    A coated eyepiece has coatings on one or more air to glass surfaces ..Just one or more .......

    A fullycoated eyepiece has coatings on all of its air to glass surfaces ...

    A multicoated eyepiece has multiple coatings on one or more air to glass surfaces ...

    A fully-multicoated eyepiece has multiple coatings on all air to glass surfaces ...

    Sometimes , when a newbie is looking at upgrading a eyepiece , they see coated or fullycoated and immiedietly think that it is the best , or better than another eyepiece ...

    Myself , i dont see why manufactures dont coat there products with multiple coatings , because in the end a companys best advertisments are happy customers .. The coatings dont cost more than a dollar per eyepiece ...If they cost that much .......
    16in Night sky Dobsonian F4.5 , 90mm refractor 500mm FL , 7in LX200 classic Big-mac , Meade eye pieces with a few odd balls thrown in ...
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    Hi all , I talked to a scope store owner today , and he told me that when he buys eyepieces , It costs 12 cents per element to fully multicoat a lens , so what that means is a four element EP costs 48 cents to fully multicoat . It isent much for a manufacture to put out to pass a better product on to the customer .
    16in Night sky Dobsonian F4.5 , 90mm refractor 500mm FL , 7in LX200 classic Big-mac , Meade eye pieces with a few odd balls thrown in ...
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