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Astronomik H-Alpha 12nm CCD EOS XL Clip Filter

£215.99

Quick Overview

The Astronomik H-Alpha 12nm CCD EOS XL Clip Filter is a narrow band filter for DSLR astrophotography - specifically for emission nebulae. Designed to fit full frame Canon Cameras
8H00LF
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Details

The Astronomik H-Alpha 12nm CCD EOS XL Clip Filter is a narrow band filter for DSLR astrophotography - specifically for emission nebulae.


This filter lets the H-alpha light of emission nebulae pass and blocks nearly the whole remainder of the spectrum where the CCD is sensitive.  This filter is designed to fit full frame Canon Cameras such as the Canon6D, 5D Mk1, 2 and 3 and some 1D models (please check with us for compatibility)..

The full width at half-maximum (FWHM) of 12nm is optimized for the use with common CCD cameras and allows the use of very fast optics. It should be noted that the filter has a transmission of up to 99%. The Astronomik H-alpha-CCD (12nm version) increases the contrast between objects, in this case between the H-alpha emission line and the skyglow background. The Astronomik H-alpha-CCD (12nm version) completely suppresses the emission lines of artificial lighting (mercury (Hg) and sodium (Na)) and skyglow.


Astronomik CLS CCD EOS XL Clip filter suitability:

    Visual observation (dark skies): Unsuitable
    Visual observation (urban skies): Unsuitable
    Film photography: Reasonable, but very long exposure times
    CCD photography: Very good, huge contrast enhancement at H II-emission nebulas
    DSLR photography (original): Good, reduced sensitivity in the H-alpha band
    DSLR photography (astro modified): Very good, huge contrast enhancement at H II-emission nebulas
    DSLR photography (MC modified): Very good, huge contrast enhancement at H II-emission nebulas
    Webcam / Video (Planets): Unsuitable
    Webcam / Video (Deep Sky): Good, good contrast enhancement with bright objects

Technical Data

    Transmission of over 97% with the H-alpha line (656nm)
    Complete blocking from all disturbing wavelengths in the infrared
    Parfocal with other Astronomik filters
    Glass thickness: 1mm
    Completely resistant against high humidity, scratches and aging effects
    Diffraction limited, the filter will not reduce the optical performance of your telescope!
    Astronomik filters are delivered in a high-quality, long lasting, filter box

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