ED APO 127 F7.5

For crisp wide field observing and imaging, nothing can beat a true triple-element apochromatic refractor (APO). This is especially true in astrophotography, where APOs have produced some of the most beautiful images of the heavens ever taken from earth. But not all APOs are created equal. Todays market is filled with semi-APOs (with two lenses instead of three) that dont bring all the colors to focus in the refractor. Aperture:127mm(5") Focal Length:952mm Focal Ratio:F/7.5 Film:Fully Multi-Coated Viewfinder:8x50 Focuser:50.8mm(2") 10:1 Two Speed Crayford