SME 60 external etalon

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Merlin66
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SME 60 external etalon

Post by Merlin66 » Thu Aug 08, 2019 2:33 am

Still looking for a SME60 etalon with Tmax tuning.
Can you help??
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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