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    Re: sun filters
    From: Sara and Dan
    Date: 2008 Jan 29, 12:07 -0500

    Irv Haworth wrote:
    
    >Dan
    >I am not that bright/knowledgeable, but if my memory serves me correctly
    >,ordinary glass filters out about 95-98 % of UV radiation .
    >
    >Irv
    >
    >-----Original Message-----
    >From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf
    >Of Sara and Dan
    >Sent: January 27, 2008 9:34 AM
    >To: NavList@fer3.com
    >Subject: [NavList 4461] sun filters
    >
    >
    >Does anyone know if the filters on sextants are really safe to view the sun
    >through?
    >If modern sextants are safe and filter out harmfull _UV_ radiation is the
    >same true for older sextants?
    >
    >Dan
    >
    >
    >
    >
    >
    >
    >>
    >
    >
    >
    The filters on my Davis mark 15 are sheet plastic.
    
    Dan
    
    
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