The Astronomik UHC Clip-Filter EOS R APS-C (Astronomik, SKU: 10220085 / 8h11uz) is a light pollution suppression filter designed for Canon EOS R APS-C mirrorless cameras. The UHC model was developed primarily for imaging emission nebulae and stands out for its very high transmission of the key H-alpha, H-beta, and OIII emission lines. Thanks to its selective spectral characteristic, the filter effectively suppresses background light and makes it possible to reveal more detail in gaseous and planetary nebulae both under urban skies and at dark observing sites.
• light pollution suppression filter for Canon EOS R APS-C cameras
• designed primarily for imaging emission nebulae
• very high transmission of the H-alpha, H-beta, and OIII lines
• effective suppression of background light and improved nebula contrast
• suitable for gaseous and planetary nebulae
• can be used both under urban and dark skies
• is a stronger alternative to the UHC-E filter under heavier light pollution
• with CMOS and CCD cameras it requires an additional Astronomik IR-Block filter
• can also be used for visual observation in 1.25" and 2" mounted versions
• parfocal with other Astronomik filters
• Astronomik UHC Clip-Filter EOS R APS-C
• filter storage box
• manufacturer: Astronomik
• product name: UHC Clip-Filter EOS R APS-C
• SKU: 10220085 / 8h11uz
• intended use: imaging emission nebulae
• 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
• filter type: UHC
• typical transmission at 486 nm (H-beta): 95%
• typical transmission at 496 nm and 501 nm (OIII): 95%
• typical transmission at 656 nm (H-alpha): 95%
• transmission range: 480-505 nm and above 645 nm
• FWHM: 25 nm
• glass thickness: 1 mm
• coating: Astronomik MFR
• parfocality: yes, with other Astronomik filters
• optical quality: diffraction-limited
• coating resistance: highly resistant to scratches, humidity, and aging
• country of manufacture: Germany
