
Orders placed during Passover Holiday (Wed 4/1 after 4PM ET – Thurs 4/9) will ship Fri 4/10. View our holiday shipping schedule.

This item is no longer available.
Review Summary
Filter for Black White Deep Sky Photography. Lumicon's Night Sky Hydrogen-Alpha Filters are long-pass filters with a 50% transition from blocking to passing at about 640nm. At wavelengths longer than 650nm, transmittance is 90% or above. The filter is used as an extreme anti light-pollution filter and for contrast-enhancement of emission nebulae and other astronomical objects bright in the infrared. Threaded for 82mm camera lenses.