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| Herschell Wedge-Solar Viewing
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Bill Geertsen/">Bill Geertsen on July 31, 1999 18:13:14 UTC |
Is the Herschell Wedge a safe alternative to the mylar filters on todays market? Is additional filtration needed? We have one in our observatory inventory but none of us are familiar with it. |
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