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Binoculars & Spotting Scopes
Binoculars
Large partial solar eclipse March 20
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<blockquote data-quote="Mark9473" data-source="post: 3170510" data-attributes="member: 106929"><p>I played around with an old prism diagonal over the weekend. Unscrewed the nosepiece and eyepiece barrels and placed it on top of a photo tripod. Projected the image into my living room over a distance of about 10 meters or so.</p><p></p><p>I now understand that a small mirror is needed to get a sharper image, but making it too small would render the image too dim.</p><p></p><p>I have an unused mirror diagonal laying around somewhere that I could cannibalize.</p><p>Would be cool to get the iris out of an old camera lens so that the effective projection diameter could be adjusted instantly.</p></blockquote><p></p>
[QUOTE="Mark9473, post: 3170510, member: 106929"] I played around with an old prism diagonal over the weekend. Unscrewed the nosepiece and eyepiece barrels and placed it on top of a photo tripod. Projected the image into my living room over a distance of about 10 meters or so. I now understand that a small mirror is needed to get a sharper image, but making it too small would render the image too dim. I have an unused mirror diagonal laying around somewhere that I could cannibalize. Would be cool to get the iris out of an old camera lens so that the effective projection diameter could be adjusted instantly. [/QUOTE]
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Binoculars & Spotting Scopes
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Large partial solar eclipse March 20
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