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Lumicon Night Sky Hydrogen-Alpha Filter - 2" # LF3090

4.8 (4 Reviews) Read Reviews Write Review
Brand Lumicon
Part Number LF3090
Availability available

Product Info

Manufacturer Description

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.

The LF3090, 2" Night Sky Hydrogen-Alpha Filter, threads into the nose-piece of industry-standard 2" Digital Imagers.

Manufacturer part number: LF3090

Reviews

4.8 (Based on 4 Reviews) 100% of reviewers recommended this product.
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    1. Guest

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      Review by Greg W.
      1532518972
      Jul 25, 2018

      5.0 Great with Night Vision

      Pros:

      Cons:

      Comments:

      This is a great filter for moderate light polluted skies and a night vision device. I use this with my PVS-7 and it cuts a lot of light pollution, darkens the background, and still allows nebula to be seen. A great addition to a 7nm Ha filter and a 685nm long pass kit.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    2. Guest

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      Review by Neil P.
      1524955287
      Apr 28, 2018

      5.0 Excellent Deep Sky Tool

      Pros:

      Cons:

      Comments:

      I use this H-alpha for visual astronomy, since it passes everything from H-alpha to the IR spectrum. The increased contrast resulting from blocking everything below H-alpha is a refreshing view!

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    3. Guest

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      Review by JimMinCT of CT, USA.
      1399852800
      May 11, 2014

      4.0 2" Lumicon Ha Filter

      Pros:

      Quality Lenses,Strong Construction,Compact,Easy to Use

      Cons:

      Difficult To Focus

      Comments:

      I bought this along with the Hotech SCA Field Flattener to use on my f/6 102mm ED refractor. This is a wider pass than some of the more expensive ones out there, but does a very nice job of picking up the emissions. I used it last night to add 2 hours of Ha to an M51 image I'm working on!

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    4. Guest

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      Review by fede of Argentina.
      1375056000
      Jul 28, 2013

      5.0 Highly recommendable

      Pros:

      Strong Construction

      Cons:

      Comments:

      This have an High performance construction. Recommendable to use in astrophotography.
      I could testing on visual observation and it bring to me unexpected good feedback!

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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