Sell ED Apochromatic Refracting Telescopes

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Description:Our 80mm ED Apochromatic refractor features second to none technologies in both design and manufacture and it can be considered the pinnacle of all 80mm scopes in domestic market. Its fully multi-coated 80mm objective triplet is handcraft made from extra-low-dispersion special glass imported from Japan. Images are virtually free of chromatic aberration within the whole visible range of spectrum! Everyone is star tested before put into market.With a focal length of 500mm and fast focal ratio of f/6.25, the "ED80" is wonderfully suited for visual applications on both solar system and deep-sky objects as well as for prime-focus astrophotography and CCD imaging. Beside its superb image quality, it also offers the great convenience for user to carry as the tube is foldaway and can be put into small case. Excellent optical quality plus superb price/quality ratio result in its popularity ever since its appearance in the market. Specifications: 1) Focal length: 500mm 2) Clear aperture: 80mm 3) Focus ratio: F6.25 4) Optical system: ED apochromatic triplet 5) Photographic resolution: 200 6) Coating: AR 7) Accessories: eyepieces (F25, F15, F10), aluminum tripod, plastic case At the same time, we are in a position to customize a series of standard achromats and ED apochromats upon customer's request. Clear aperture (mm), focal length (mm), focus ratio: 1) 80 (3.15''), 480, 6 2) 80 (3.15''), 560, 7 3) 102 (4''), 800, 8 4) 102 (4''), 714, 7 5) 102 (4''), 612, 6 6) 115 (4.5'') , 805, 7 7) 115 (4.5''), 690, 6 8) 127 (5''), 635, 5 9) 127 (5''), 762, 6 10) 152 (6''), 912, 6 11) 175 (6.9''), 1,400, 8 12) 203 (8''), 1,624, 8 13) 229 (9''), 2,061, 9 14) 254 (10''), 2,286, 9