Optolong LRGB Filter Set

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The Optolong LRGB filter set is designed for maximum contrast and with extremely high gradients for clear differentiation of colors. The filters divide the spectrum into red, green , blue and luminance. OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. The gap between green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation. Fine-optically polishing for double-sides ensures accurate λ/4 wavefront and 95% Coating Wavelength: 300-1050nm Optical Density: OD3 Surface Quality: 60/40 Transmitted Wavefront RMS: λ/4 Parallelism (arc sec): 30s Filter Casing Width: 4.9mm Show more