Positive Meniscus Lens for Spectrohelioscope

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kohamher1
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Positive Meniscus Lens for Spectrohelioscope

Post by kohamher1 » Wed Feb 28, 2018 11:42 pm

Can anybody please advise where I might find a positive meniscus lens for a spectrohelioscope.

highfnum
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Re: Positive Meniscus Lens for Spectrohelioscope

Post by highfnum » Sun Mar 04, 2018 2:44 am

What diameter and focal length

Edmund optics sells them

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Merlin66
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Re: Positive Meniscus Lens for Spectrohelioscope

Post by Merlin66 » Sun Mar 04, 2018 9:58 pm

There's also a couple of suitable lenses on the Surplus Shed website.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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