Description

Alpine Astronomical FHALW-1 Overview

This 1.25″ Baader H-alpha 20nm Bandpass Filter from Alpine Astronomical is a high-contrast deep-sky, H-alpha/red filter for RGB astroimaging with CCD and CMOS cameras and telescopes of all focal ratios. The filter allows high-contrast images of H-II regions, even in light-polluted areas. UV/IR blocking eliminates blurring or heat-noise from defocused light on refractor optics.

• Increased contrast, matched for typical CMOS quantum efficiency and s/n ratio
• Reflex-Blocker coatings, for freedom from halos, even under most adverse conditions concerning aux-optics
• 6mm low-profile filter cell
• Identical filter thickness to existing standards, with utmost care for parfocality
• Blackened edges all around, with filter-lead-side-indicator in the form of a black frontside 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
• Life-Coat hard coatings to enable a non-aging coating for life, even in adverse environments

In the Box

• Alpine Astronomical H-Alpha 20nm Bandpass Filter (1.25″)
• Limited 2-Year Manufacturer Warranty

Additional Resources

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Alpine Astronomical FHALW-1Specs

Packaging Info

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