Product no.: 59444Manufacturer: Optolong
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The H-alpha filter is a popular narrowband filter, with a low passband for light in the red wavelength at 656nm. It passes only the narrow region with hydrogen-alpha light and blocks unwanted wavelengths. Discover unsuspected nebula details in hydrogen nebulae.
Please note that this filter must never be used as the only solar filter!
This article is not available to customers in Germany.
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