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Use of vintage eyepiece sun filters.

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277 replies to this topic

#276 terraclarke

terraclarke

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Posted 30 November 2017 - 10:15 AM

Yeah! :4

 

“You’ll shoot your eye out kid!” ;)


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#277 deSitter

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Posted 04 December 2017 - 08:07 AM

I still find it strange that the meticulous and careful Japanese could have sold these filters. There must have been evidence of failures. Also, it was probably intended only to be used with a Huygenian eyepiece having simple elements and with the focal plane rather far from the filter.

 

They make good dust caps :)

 

-drl


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#278 Joe Cepleur

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Posted 04 December 2017 - 05:57 PM

Why were these filters designed to fit at the eyepiece? Wouldn't it have been just as easy to fit them over the objective? Was it purely economic, a smaller filter being cheaper than a larger one?
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