Solomark 1.25 Inch Telescope LRGB Filter Set All filters are housed in a sturdy filter cell and have Anti-Reflective coatings. Red, blue, and green filters plus the haze-eliminating Luminance filter give stunning astrophotographic results. Combining separate astrophotographs taken through these LRGB filters produces finer resolution and amazing color. The SOLOMARK LRGB Filter Set includes four filters, 1.25" luminance Filter, 1.25" Red Filter, 1.25" Green Filter 1.25" Blue Filter TELESCOPE PLAETARIUM DEEP SKY FILTER