Quattro 150P Imaging NewtonianDescription 150mm aperture, 600mm focal length Fast f 4 focal ratio Parabolic borosilicate mirrors utilizing Sky Watchers proprietary Radiant Aluminum Quartz (RAQ) coatings designed for imaging with 94% reflectivity 11: 1, dual speed, 2 inch Crayford style focuser Oversized secondary mirror produces greater illumination for full frame DSLR and CCD cameras Primary and secondary mirrors are both collimatable Included coma corrector is designed to match
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