Refractor telescope aperture 70 mm focal length 700 mm focal ratio 110 optical systems fraunhofer achromatic refractor suitable for beginners max useful magnification 140 x tracking altazimuth mount altazimuth az 2 tripod aluminium tripod telescope feature easily transportable minimum useful magnification 10 resolution power 164 bogensekunden light collecting power 7mm pupil 100 border size 11 mag finderscope 6x24 eye piece 125 eyepiec