Optolong LRGB Filter Set (2")

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🌌 Capture the cosmos with precision and clarity like never before!

The Optolong LRGB Filter Set (2") features double-sided fine optical polishing for precise λ/4 wavefront accuracy and parallelism under 30 seconds. Ultrasonic cleaning removes impurities, while an IRO-assisted coating ensures scratch resistance and stable central wavelength despite temperature changes. Each filter is rigorously tested with spectrophotometers and laser interferometers, making it a premium choice for professional-grade astrophotography and optical applications.