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Rdutton Offline
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#2
02-17-2018, 09:51 PM
That's a very good question since most sights we take are of the Sun. There's no information that I could find about my Astra III-B. That said, it appears that regular glass will filter out UV pretty well. But how much is that?

This might be helpful- http://www.physlink.com/education/askexperts/ae603.cfm


Roland
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Messages In This Thread
Filters - by Speicus - 02-17-2018, 03:21 PM
RE: Filters - by Rdutton - 02-17-2018, 09:51 PM
RE: Filters - by Rumata - 02-18-2018, 12:38 AM
RE: Filters - by EdCa - 02-28-2018, 11:14 AM
RE: Filters - by Rumata - 03-02-2018, 03:10 AM
RE: Filters - by Speicus - 03-14-2018, 10:24 PM
RE: Filters - by P.Rutherford - 03-15-2018, 07:54 PM

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