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Optolong
Optolong 1.25" H-Alpha 7nm Filter
Optolong 1.25" H-Alpha 7nm Filter
Regular price
$110.98 USD
Regular price
$179.00 USD
Sale price
$110.98 USD
Shipping calculated at checkout.
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Optolong H-Alpha 7nm filter is the popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
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