Optolong LRGB Filter Set The Optolong LRGB Filter Set is designed for maximum contrast and with extremely high gradients for clear differentiation of colors. The LRGB filter set divides the spectrum into its components Red, Green, Blue and Luminance. OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. Gap between green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation. Work well with debayered monochrome CCD cameras. Suitable for deepsky and planetary CCD imaging. RGB-imaging allows equal weighting factors for each channel, very important for automated imaging. The ideal raw material for image processing in the RGB color space is available with LRGB filter set and mono CCD camera. Technical Specifications Thickness: 2mm In the Box Luminance, Red, Green, Blue Filters Manuals & Warranty Optolong 3 Years-Warranty