Refractor telescope aperture 90 mm focal length 900 mm focal ratio 110 optical system refractor max useful magnification 180 x tracking equatorial mount equatorial mount 2 eq2 tripod aluminium tripod minimum useful magnification 12 finderscope 6x30 eyepiece type super plssl included in delivery 2x barlow lens star diagonal 125 t 2 adapter piggy back camera mount