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Alpine Astronomical Baader 3.5/4nm Ultra-Narrowband Filter Set CMOS-Optimized (1.25″)(Alpine Astronomical Baader 3 5 4nm Ultra Narrowband Filter Set Cmos Optimized 1 25)

Original price was: $372.00.Current price is: $95.99.

SKU: DGFUB 6751502434389 Categories: Optics, Optics & Surveillance, Telescopes Tags: Alpine Astronomical FCSETNU-1, Astro Imaging Filters, Optics, Telescopes

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Alpine Astronomical FCSETNU-1 Overview

The 1.25″ Baader 3.5/4nm Ultra-Narrowband Filter Set from Alpine Astronomical features three precision-grade filters recommended for optical systems from f/10 to f/3.5. The set includes H-alpha, O-III, and S-II filters optimized for CMOS sensor cameras and suitable for use with CCD sensors.

3.5/4nm half width (to harmonize exposure time of H-alpha with O-III / S-II), recommended for optical systems from f/10 to f/3.5

Enables high contrast even with the strongest light pollution to minimize the size of stars and make nebula details accessible which is useful under a Bortle 9/8/7/(6) sky

Reflex-Blocker hard-coated and optically polished, with Life-Coat sealed coating edges

Blackened edges all around, with a filter front indicator in the form of a black outer edge on the front

Optimized for CMOS sensor cameras and suitable for CCD sensors

FWHM on each filter category carefully designed to allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s/n ratio

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

In the Box

Alpine Astronomical Baader 3.5/4nm Ultra-Narrowband Filter Set CMOS-Optimized (1.25″)
Limited 2-Year Warranty

Alpine Astronomical FCSETNU-1 Specs

Alpine Astronomical FCSETNU-1 Reviews

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