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585 EUR
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price without VAT: 476 EUR
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The Astronomik H-alpha 6nm MaxFR Clip-Filter EOS R APS-C (Astronomik, SKU: 10220221 / 8h11vp) is a narrowband emission filter designed for Canon EOS R APS-C mirrorless cameras. This model was developed for imaging HII regions, both under light-polluted skies and at dark observing sites. Thanks to its 6 nm Full Width Half Maximum bandwidth, the filter effectively increases the contrast between objects emitting light in the H-alpha 656 nm line and the sky background, allowing long-exposure imaging with high contrast. The version with MaxFR coating was optimized for use with very fast optical systems, which means it can also be used with instruments of very low focal ratio without the need for separate high-speed versions.
• narrowband H-alpha filter for Canon EOS R APS-C cameras
• designed for imaging HII regions
• 6 nm Full Width Half Maximum bandwidth
• high image contrast thanks to effective suppression of the sky background
• blocking of unwanted light outside the H-alpha line from UV to IR
• MaxFR coating for use with very fast optical systems
• full usability in the focal ratio range from f/2.2 to f/6
• approximately 90% of maximum transmission at f/2
• high transmission at the H-alpha 656 nm line
• helps reduce the number of stars in the frame compared to 12 nm filters
• parfocal with other Astronomik filters
• the filter is not intended for solar observation
• Astronomik H-alpha 6nm MaxFR Clip-Filter EOS R APS-C
• filter storage box
• manufacturer: Astronomik
• product name: H-alpha 6nm MaxFR Clip-Filter EOS R APS-C
• SKU: 10220221 / 8h11vp
• intended use: imaging HII regions
• camera compatibility: Canon EOS R7, Canon EOS R10, Canon EOS R50, Canon EOS R50 V, Canon EOS R100
• non-compatible lenses: Canon RF 14mm f/1.4 L VCM, Canon RF 28mm F2.8 STM, Canon RF 35mm F1.8 IS Macro STM, Canon RF 85mm F1.2L USM, Canon Extender RF 2x, Canon Extender RF 1.4x
• guaranteed transmission: more than 90% at the H-alpha 656 nm line
• typical transmission: 93% at the H-alpha line
• FWHM: 6 nm
• coating: Astronomik MaxFR
• recommended focal ratio range: from f/2.2 to f/6
• transmission at f/2: approximately 90% of maximum transmission
• glass thickness: 1 mm
• parfocality: yes, with other Astronomik filters
• optical quality: diffraction-limited
• coating resistance: highly resistant to scratches, humidity, and aging
• country of manufacture: Germany
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