Product no.: 64421Manufacturer: Astrodon
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This Red Continuum filter (645 nm, 5 nm FWHM) produces a star map without the H-a or SII emission in order to subtract stars from emission images. Astrodon NB filters are renowned for not producing halos around stars and not leaking NIR light.
Note: The picture shows different varieties of these filters according to their possible use.
Delivery consists of one item only.
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