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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
>
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>>
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The filters on my Davis mark 15 are sheet plastic.

Dan


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