Alpine Astronomical Baader f/2 Highspeed H-alpha Filter (1.25")

BH #ALFHALHS1 • MFR #FHALHS-1
Alpine Astronomical
Alpine Astronomical Baader f/2 Highspeed H-alpha Filter (1.25")
Key Features
  • Ideal for Astrophotography and Imaging
  • Centered on the 656.3nm Wavelength
  • Designed for Use on Fast Astrographs
  • NOT Safe for Solar Viewing or Imaging
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.
Special Order
Expected availability: 7-14 business days
$257.00
$0 OR Sales Tax Collected on This Item

Alpine Astronomical Baader f/2 Highspeed H-alpha Filter (1.25")

Sales and export of this item to South Korea are prohibited.
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Alpine Astronomical FHALHS-1 Overview

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 H-alpha 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 throughput, and precision planeoptically polished to limit distortion and color fringing. This version of the filter is offered here mounted in a standard 1.25" filter ring assembly for easy installation on just about any 1.25" 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.

Alpine Astronomical FHALHS-1 Specs

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