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Purpose-built for monochrome CMOS/CCD astrophotography: balanced LRGB passbands deliver vivid, accurate color with maximum signal efficiency
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Individually verified: each filter ships with its own spectrographic test report so you know exactly what’s in your optical train
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Bright data, tight stars: ultra-high peak transmission (~96.5–98.5%) paired with advanced UV/IR blocking minimizes star bloat—especially on refractors
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Cleaner stars, fewer halos: precision AR (anti-reflection) coatings and a black resin edge mask suppress internal reflections for pristine stellar profiles
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True parfocal workflow: all filters are parfocal at 1.85 mm thickness to speed up multi-channel imaging sessions
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Color that clicks: Red, Green, and Blue bands are carefully matched and nested within the Luminance window for pure tones and efficient color combination
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Built to pro standards: high-accuracy dichroic/dielectric coatings with deep off-band blocking, mounted in precision CNC cells for strain-free, tilt-free alignment
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Durable optics: premium glass with a 60/40 scratch-dig rating stands up to regular handling and filter wheel duty
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Format: 2" mounted LRGB filter set (ColourPRO series, R1)
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Camera compatibility: Mono CMOS and CCD
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Peak transmission: ~96.5–98.5% (per filter)
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Blocking: Advanced UV/IR block; deep off-band rejection
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Coatings: Multi-layer dichroic/dielectric with AR (halo-suppressing) treatment
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Optical thickness / parfocality: 1.85 mm (parfocal across the set)
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Glass quality: 60/40 scratch-dig
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Edge treatment: Black resin peripheral coating to reduce internal reflections
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Cells: Precision CNC-machined, strain-free, tilt-free mounting
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Quality control: Every filter individually tested; spectrographic report included
