This 2" eyepiece Baader 3.5/4nm f/3 Ultra-Highspeed H-Alpha CMOS Filter from Alpine Astronomical is recommended for extremely fast optical systems from f/3.4 to 2.3 and is particularly designed for the special filter requirements of f/3 optics. The filter features a Reflex-Blocker hard coating, which has been optically polished, and has Life-Coat sealed edges. It is equally suitable for modern CMOS sensors as well as for older CCD camera technologies.
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Key Features
- Optimized for CMOS, Suitable for CCD
- Reflex-Blocker Hard Coated
- Life-Coat Sealed Coating Edges
This 2" eyepiece Baader 3.5/4nm f/3 Ultra-Highspeed H-Alpha CMOS Filter from Alpine Astronomical is recommended for extremely fast optical systems from f/3.4 to 2.3 and is particularly designed for the special filter requirements of f/3 optics. The filter features a Reflex-Blocker hard coating, which has been optically polished, and has Life-Coat sealed edges. It is equally suitable for modern CMOS sensors as well as for older CCD camera technologies.
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Alpine Astronomical FCHALMSU-2 Overview
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