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Calcium-K Solar Filters


Calcium-K Solar Filters
Calcium K filters are used to study the 393.4nm emission line just at the edge of the visible spectrum in a layer of the chromosphere that is slightly lower and cooler than the layer viewed in Hydrogen-alpha.
Daystar Calcium H Line Filter CH5ATS
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$4000.00
Daystar Calcium K-line Filter CK2AUNI
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$5669.50

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