Refractor telescope aperture 50 mm focal length 600 mm focal ratio 112 optical system refractor suitable for beginners children max useful magnification 118 x tracking altazimuth mount altazimuth tripod aluminium tripod telescope features barlow lens compatible easily transportable astrophotography function none minimum useful magnification 7 coating fully coated series celestron powerseeker finderscope 5x24 eyepiece type plssl eyepiece foca