Refractor telescope aperture 102 mm focal length 500 mm focal ratio 149 optical systems fraunhofer achromatic refractor max useful magnification 204 x tracking altazimuth mount altazimuth az 3 tripod aluminium tripod features red dot viewfinder minimum useful magnification 14 eye piece 2 eyepiece type super plssl included in delivery amici prism eyepiece adapter 125 2