Baader Planetarium 4.5nm Sulfur-II Ultra-Narrowband CCD Filter, 36mm, Unmounted
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Baader Planetarium 4.5nm Sulfur-II Ultra-Narrowband CCD Filter, 36mm Round, Unmounted

SKU: AAFSIINURD36 MFR: FSIINU-RD36
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Key Features

  • Capture stunning astrophotos with this 36mm Sulfur-II Ultra-Narrowband CCD Filter.
  • Experience superior blocking performance, enhancing contrast for detailed views.
  • Achieve precise S-II transmission range with a narrow 4.5nm half bandwidth (HBW).
  • Threaded compatibility ensures easy integration with your existing telescope setup.
  • Durable material provides long-lasting use, protecting your telescope investment.
  • Enhance image contrast & reveal faint details using this premium telescope filter.
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Special Order?Estimated to Ship: 08/17/2025
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Baader Planetarium Narrowband Filter Specifications

  • Transmission range

    S-II

  • Filter thickness (without cell)

    2mm / 3mm

  • HBW (half bandwidth)

    4.5nm

  • CWL (central wavelength)

    673 nm

  • AR-coating

    Dielectrically coated, plane-optically polished

  • Filter usage

    CCD, IR-Cut, S-II

  • Filter mounted

    Unmounted

  • Filter Size

    36mm

  • Weight

    0.07kg (0.15 lbs)

About Baader Planetarium Narrowband Filter

Because capturing the perfect image requires precision and quality equipment, the 4.5nm Sulfur-II Ultra-Narrowband CCD Filter, 36mm Round, Unmounted, is a premium choice for astrophotography enthusiasts and professionals alike. This high-grade filter is specifically designed for use with fast optical systems, ideally with focal ratios ranging from f/3 to f/8.

Engineered with advanced technology, this filter is IR blocked to prevent infrared light from distorting your images. It also boasts anti-reflection coatings, a feature that significantly reduces glare and ensures your images are free from unwanted halos and ghosting.

One of the standout features of this 4.5nm Sulfur-II Ultra-Narrowband CCD Filter is its non-ageing sealed coated edges. This design detail ensures the filter's longevity, allowing you to capture stunning celestial images for years to come.

Whether you're capturing the ethereal beauty of nebulae or the intricate details of distant galaxies, this 36mm round, unmounted filter is a valuable addition to your astrophotography equipment.

Baader Planetarium Narrowband Filter Features

  • For fast optical systems from f / 8 to f / 3
  • Reflection-free, anti-reflective and smooth-surfaced
  • IR-blocked
  • NO halos, NO reflections, NO ghosting
  • Non-ageing sealed coating edges

Warranty Information

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

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Key Features

  • Capture stunning astrophotos with this 36mm Sulfur-II Ultra-Narrowband CCD Filter.
  • Experience superior blocking performance, enhancing contrast for detailed views.
  • Achieve precise S-II transmission range with a narrow 4.5nm half bandwidth (HBW).
  • Threaded compatibility ensures easy integration with your existing telescope setup.
  • Durable material provides long-lasting use, protecting your telescope investment.
  • Enhance image contrast & reveal faint details using this premium telescope filter.

What's in the box:

  • Baader Planetarium 4.5nm Sulfur-II Ultra-Narrowband CCD Filter (36mm Round)
  • Alpine Astronomical Baader Stackable Filter Box
  • Baader Planetarium 2 Year Limited Warranty