Alpine Astronomical Baader f/2 Highspeed H-alpha Filter (2")

Alpine Astronomical Baader f/2 Highspeed H-alpha Filter (2")

Alpine Astronomical Baader f/2 Highspeed H-alpha Filter (2")

B&H # ALFHALHS2 MFR # FHALHS-2
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Expected availability: 7-14 business days

Product Highlights

  • Ideal for Astrophotography and Imaging
  • Centered on the 656.3nm Wavelength
  • Designed for Use on Fast Astrographs
  • NOT Safe for Solar Viewing or Imaging
  • Dielectric Anti-Reflection Coated
  • Standard 2" Eyepiece Filter Threads
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Size: 2"

1.25"

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2" vbyexbwacdsvdeyftbrtxa

Wavelength: Hydrogen-alpha

Hydrogen-alpha Oxygen-III vbyexbwacdsvdeyftbrtxa

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Sulfur-II

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Filter Set: H-a, O-III, S-II

Back-Ordered - Special Order

$0.00 Tax Collected Outside NY and NJ

You Pay: $389.00

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Alpine Astronomical FHALHS-2 overview

  • 1Description

Optimized for use on fast astrographs for astrophotography and imaging, the Alpine Astronomical Baader f/2 Highspeed H-alpha Filter isolates this narrow 656.3nm wavelength to improve the visibility and contrast of faint and wispy nebulae, even in heavily light-polluted areas. This filter is ideal when used on Celestron's Rowe-Ackermann Schmidt Astrograph (RASA), or with Hyperstar-equipped Cassegrains.

When conventional narrow-band filters are used on fast optical tube assemblies, there is usually significant transmission loss due to strong center-wavelength shift. To counter this, the highspeed filter is designed to be pre-shifted to bring them back on band when used with f/2 to f/3 optical systems. The filter surface is dielectrically coated with anti-reflection coatings to transmit the maximum amount of light through, and precision planeoptically polished to limit distortion and color fringing. It comes mounted for easy installation on just about any 2" eyepiece, diagonal, or Barlow lens for prime-focus or eyepiece projection photography and imaging techniques.

This filter is intended only for deep-sky astroimaging and photography equipment, and should never be used for direct solar viewing or solar photography as permanent injury to your eye and equipment can occur, up to and including blindness.

In the Box
Alpine Astronomical Baader f/2 Highspeed H-alpha Filter (2")
  • Baader Stackable Filter Box
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

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