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
No additional resources available
Alpine Astronomical FHALW-1Specs
Size | 1.25″ / 31.8 mm |
Packaging Info
Package Weight | 0.125 lb |
Box Dimensions (LxWxH) | 3.75 x 3 x 0.95″ |
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