Our 80mm APO refractor can provide superb images while offering the great conveniencefor users to carry (the OTA is retractive and can be put into small cases).Strictly followed by ISO9001 Quality Controlling System, every single refractoris handcraft made and star tested by our highly qualified technicians whose averageworking experience are over 25 years. The cemented apochromatic triplet objectiveis made from extra- low dispersion glasses and are completely achromaticaberration free within the whole visible range of spectrum. These are distinct charactersthat have differed our ED type from those poorly made telescopes in bothquality and price. Offering more details and high contrast in the center andedge of the objective, our ED refractor is the excellent choice for high-end astronomicalusers.