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filters

Night Sky Hydrogen-Alpha (Ha) Filter - 82mm [LF3115]

Lumicon   ——   SKU: LF3115
$186.00 CAD
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About the Lumicon Night Sky Hydrogen-Alpha (Ha) Filter - 82mm...

Lumicon 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.

 

The LF3085, Lumicon Night Sky Hydrogen-Alpha Filter, threads into the nose-piece of industry-standard 1.25" Digital Imagers. Designed for photographic use.

 

Threaded for 82mm camera lenses.

 

 

Lumicon Night Sky Hydrogen-Alpha (Ha) Filter - 82mm Features...

 

  • 50% transition from blocking to passing at about 640nm

     

     

  • At wavelengths longer than 650nm, transmittance is 90% or above

     

     

  • Used as an extreme anti light-pollution filter, and for contrast-enhancement of emission nebulae and other astronomical objects bright in the infrared

     

     

  • Exclusively designed dielectric coatings consist of over 30 alternating layers of several different

    materials

     

     

  • Each layer is about a wavelength of light thick and has a thickness accurate to 2 - 3

    angstroms

 

 

Lumicon Night Sky Hydrogen-Alpha (Ha) Filter - 82mm Specifications...

Filter Type: H-Alpha

Application: Photographic

Filter Size: 82mm camera lens

Presentation: Round, threaded cell

Bandpass: 640nm

Lumicon Product Number: LF3115