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ManufacturerBaader Planetarium
SKU (#)2961331
EAN Code4047825047601
Net weight (kg)0.09
ColourBlack
Transmission RangeH-alpha
Filter Thickness (without cell)3 mm
HBW (Half bandwidth)3.5 nm
CWL (Central Wavelength)656,3 nm
AR-CoatingReflex-Blockerâ„¢ hard coated, Plane-optically polished
Special FeaturesCMOS-optimized with Life-Coatâ„¢\n
Filter size65 x 65 mm
Filter UsageCMOS, CCD, H-alpha
Filter mountedUnmounted
Type of FilterUltra-Narrowband
Single or Set?Single Filter
Filter shapesquare
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Baader H-alpha Ultra-Narrowband-Filters (3.5nm) – CMOS Optimized

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Baader H-alpha Ultra-Narrowband-Filters (3.5nm) – CMOS Optimized

Highlights

  • Baader H-alpha Ultra-Narrowband Filter – Premium Grade
  • 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for optical systems from f/10 to f/3.5
  • For highest contrast even at strongest light pollution, minimizes star size, emphasizes finest nebula detail – indispensable under Bortle 9/8/7/(6) skies
  • Reflex-Blockerâ„¢ hard coated and Plane-optically polished – with sealed coating edges (Life-Coatâ„¢)
  • Blackened edges all around, with filter-lead-side-indicator in the form of a black front side outer rim
  • Optimized for modern CMOS cameras, but excellent for CCD camera technologies

We explicitly warn against observing the sun with a DeepSky 6.5 nm (equivalent to 65 Angstrom) H-alpha narrowband filter, specialized solar chromosphere and prominence filters from SolarSpectrum start at 0.8 Angstrom. Photographic experiments with a camera are theoretically possible, but by no means observe the sun with naked eyes – you endanger your eyesight!

This new generation of Baader CMOS-filters features:

CMOS-optimized Baader Filters

 

  • Increased contrast
  • Ever more narrow band-passes
  • Reflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics
  • FWHM on each filter category carefully designed to allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s/n ratio
  • Identical filter thickness to existing standards, with utmost care for remaining Par focal
  • Blackened edges all around, with filter-lead-side-indicator in the form of a black front side outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter
  • Each filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed, read more)
  • Life-Coatâ„¢: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment

    • WE FOUND THE WAY
    New CMOS-optimized Baader (Ultra-)Narrowband and High-speed Filters 

    Specifications

    Manufacturer Baader Planetarium
    SKU (#) 2961331
    EAN Code 4047825047601
    Net weight (kg) 0.09
    Colour Black
    Transmission Range H-alpha
    Filter Thickness (without cell) 3 mm
    HBW (Half bandwidth) 3.5 nm
    CWL (Central Wavelength) 656,3 nm
    AR-Coating Reflex-Blockerâ„¢ hard coated, Plane-optically polished
    Special Features CMOS-optimized with Life-Coatâ„¢
    Filter size 65 x 65 mm
    Filter Usage CMOS, CCD, H-alpha
    Filter mounted Unmounted
    Type of Filter Ultra-Narrowband
    Single or Set? Single Filter
    Filter shape square
    Select Size
    From $71.59

    Original: $204.54

    -65%
    Baader H-alpha Ultra-Narrowband-Filters (3.5nm) – CMOS Optimized—

    $204.54

    $71.59

    Product Information

    Shipping & Returns

    Description

    Highlights

    • Baader H-alpha Ultra-Narrowband Filter – Premium Grade
    • 3.5 nm FWHM (to harmonize the exposure time with O-III / S-II), recommended for optical systems from f/10 to f/3.5
    • For highest contrast even at strongest light pollution, minimizes star size, emphasizes finest nebula detail – indispensable under Bortle 9/8/7/(6) skies
    • Reflex-Blockerâ„¢ hard coated and Plane-optically polished – with sealed coating edges (Life-Coatâ„¢)
    • Blackened edges all around, with filter-lead-side-indicator in the form of a black front side outer rim
    • Optimized for modern CMOS cameras, but excellent for CCD camera technologies

    We explicitly warn against observing the sun with a DeepSky 6.5 nm (equivalent to 65 Angstrom) H-alpha narrowband filter, specialized solar chromosphere and prominence filters from SolarSpectrum start at 0.8 Angstrom. Photographic experiments with a camera are theoretically possible, but by no means observe the sun with naked eyes – you endanger your eyesight!

    This new generation of Baader CMOS-filters features:

    CMOS-optimized Baader Filters

     

  • Increased contrast
  • Ever more narrow band-passes
  • Reflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics
  • FWHM on each filter category carefully designed to allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s/n ratio
  • Identical filter thickness to existing standards, with utmost care for remaining Par focal
  • Blackened edges all around, with filter-lead-side-indicator in the form of a black front side outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter
  • Each filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed, read more)
  • Life-Coatâ„¢: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment

    • WE FOUND THE WAY
    New CMOS-optimized Baader (Ultra-)Narrowband and High-speed Filters 

    Specifications

    Manufacturer Baader Planetarium
    SKU (#) 2961331
    EAN Code 4047825047601
    Net weight (kg) 0.09
    Colour Black
    Transmission Range H-alpha
    Filter Thickness (without cell) 3 mm
    HBW (Half bandwidth) 3.5 nm
    CWL (Central Wavelength) 656,3 nm
    AR-Coating Reflex-Blockerâ„¢ hard coated, Plane-optically polished
    Special Features CMOS-optimized with Life-Coatâ„¢
    Filter size 65 x 65 mm
    Filter Usage CMOS, CCD, H-alpha
    Filter mounted Unmounted
    Type of Filter Ultra-Narrowband
    Single or Set? Single Filter
    Filter shape square
    Baader H-alpha Ultra-Narrowband-Filters (3.5nm) – CMOS Optimized | Telescopes