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Baader Planetarium 2" Round H-alpha Enforced-Narrowband 3.5nm Filter with LPFC Mount for f/10 to f/3.5 Optical Systems

SKU: AA2459454 MFR: FHALNE-2
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Key Features

  • Capture stunning deep sky images with this 2" H-alpha narrowband filter.
  • Experience superior light pollution reduction with this premium telescope filter.
  • Achieve optimal transmission rate at 656.3nm for detailed H-alpha imaging.
  • Durable material ensures long-lasting performance of your astronomy filter.
  • Enjoy easy installation with the included LPFC mount; fits f/10 to f/3.5.
  • Explore the cosmos with enhanced contrast using this high-quality filter.
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Special Order?Estimated to Ship: 09/07/2025
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Review Summary

2019-05-29T16:43:43

Rated 5 out of 5

The perfect mounting cell for eclipse photographers

AstroSolar film is the standard for white light solar filters. This mounting cell has two great advantages for eclipse photographers. The wide flange shades your camera avoiding overheating. The external 3 rubber bumper attachment is easy to remove and replace quickly without disturbing your aim. This is a great advantage for totality in a total solar eclipse. Highly recommended

Robert P.

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Baader Planetarium Filter Specifications

  • Compatibility

    f/10 to f/3.5 Optical Systems

  • Transmission Range

    H-alpha

  • Filter Thickness (without Cell)

    2mm

  • HBW (Half bandwidth)

    3.5nm

  • CWL (central Wavelength)

    656.3nm

  • AR-coating

    Dielectrically coated, plane optically polished

  • Filter Size

    2"

  • Visual/Imaging

    Imaging

  • Filter Usage

    CCD, Deep Sky, H-alpha

  • Filter Mounted

    Mounted (LPFC 6mm)

  • Type of Filter

    Narrowband

  • Filter Shape

    Round

  • Weight

    0.06kg (0.13lbs)

About Baader Planetarium Filter

FEATURED REVIEWS

The perfect mounting cell for eclipse photographers

By Robert P.

AstroSolar film is the standard for white light solar filters. This mounting cell has two great advantages for eclipse photographers. The wide flange shades your camera avoiding overheating. The external 3 rubber bumper attachment is easy to remove and replace quickly without disturbing your aim. This is a great advantage for totality in a total solar eclipse. Highly recommended

Enhance your astrophotography experience with the Baader Planetarium 2" Round H-alpha Enforced-Narrowband 3.5nm Filter, meticulously engineered for f/10 to f/3.5 optical systems. This high-quality, durable filter is your gateway to the incredibly narrow 3.5nm H-alpha world, allowing you to delve into the cosmos with unprecedented clarity.

Crafted with innovative technology, this filter dramatically boosts contrast, enabling the capture of even the faintest stars and revealing more intricate details of the most elusive nebulae. Its effectiveness is rooted in the stringent manufacturing process that demands extreme coating homogeneity and exceptional central wavelength (CWL) precision, ensuring that only the H-alpha wavelength is transmitted, while all other wavelengths are blocked.

The enforced contrast achieved through this filter's design results in astrophotography images that are not only more detailed but also more reliable, as it significantly reduces the impact of light pollution. This makes it an indispensable tool for astrophotographers seeking to document the beauty of the night sky in its purest form.

The initial production of these innovative filters has focused on the most essential sizes, including the 2" / 50.4 mm round and 50x50 mm square formats, with additional sizes anticipated to meet the needs of various optical systems. With a full width at half maximum (FWHM) that defines the precision of this filter, astrophotographers can trust in the consistent performance and quality that Baader Planetarium is renowned for.

Choose the Baader Planetarium 2" Round H-alpha Enforced-Narrowband 3.5nm Filter for a transformative astrophotography experience, capturing celestial wonders with unparalleled detail and clarity.

Baader Planetarium Filter Features

  • Precision grade enforced H-alpha filter for f/10 to f/3.5 optical systems
  • Opens up the extremely narrow 3,5nm H-alpha world
  • This enforced contrast results in even fainter stars, providing more signal of faintest nebulae detail
  • Very low halo and reflective angle - compared to competing line filters.

Warranty Information

This product has a limited warranty of 24 months for parts and 24 months for labor.

Key Features

  • Capture stunning deep sky images with this 2" H-alpha narrowband filter.
  • Experience superior light pollution reduction with this premium telescope filter.
  • Achieve optimal transmission rate at 656.3nm for detailed H-alpha imaging.
  • Durable material ensures long-lasting performance of your astronomy filter.
  • Enjoy easy installation with the included LPFC mount; fits f/10 to f/3.5.
  • Explore the cosmos with enhanced contrast using this high-quality filter.

What's in the box:

  • 2" Round H-alpha Enforced-Narrowband 3.5nm Filter with LPFC Mount for f/10 to f/3.5 Optical Systems
  • Limited 2-Year Manufacturer Warranty