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Alpine Astronomical Baader f/2 Highspeed Oxygen-III Nebula Filter (50mm Square, Unmounted)

Alpine Astronomical Baader f/2 Highspeed Oxygen-III Nebula Filter (50mm Square, Unmounted)

B&H # ALFOIIIHSS50 MFR # FOIIIHS-SQ50
Alpine Astronomical Baader f/2 Highspeed Oxygen-III Nebula Filter (50mm Square, Unmounted)

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Expected availability: 2-4 weeks

Product Highlights

  • Ideal for Astrophotography and Imaging
  • Designed for Use on Fast Astrographs
  • High-Contrast Emission Nebulae Images
  • Dielectric Anti-Reflection Coated
  • Unmounted for Custom Applications
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Size & Mounting: 50x50mm Square, Unmounted

1.25" Eyepiece Frame

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2" Eyepiece Frame

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31mm Round, Unmounted

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50.4mm Round, Unmounted

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50x50mm Square, Unmounted

Wavelength: Oxygen-III

Hydrogen-alpha

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Oxygen-III Sulfur-II

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

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$359.00
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Alpine Astronomical FOIIIHS-SQ50 Overview

  • 1Description

Optimized for use on fast astrographs for astrophotography and imaging, the Alpine Astronomical Baader f/2 Highspeed Oxygen-III Nebula Filter is used to tease out the elusive details and boost contrast on planetary nebulae by eliminating all wavelengths of light except for the narrow O-III band. 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 Nebula 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 as an unmounted 50x50mm square option for custom applications and imaging systems.

In the Box
Alpine Astronomical Baader f/2 Highspeed Oxygen-III Nebula Filter (50mm Square, Unmounted)
  • Baader Stackable Filter Box
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

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