The Sky-Watcher Virtuoso GTi 130P is a 5.1” (130mm) f/5 Newtonian reflector with a 650mm focal length, featuring a unique collapsible strut tube for easier storage and portability. It is identical to the Heritage 130P optical tube, and shares its optical configuration with many other 130mm f/5s, including the Celestron 130mm f/5 computerized Newtonians such as the Astro-Fi 130 and 130SLT. Even though an f/5 Newtonian has minor coma at the edges of the field with a wide-angle 2″ ocular, it’s unlikely you’d notice given this model only features a 1.25″ focuser. However, be aware that cheaper eyepieces can also produce aberrations if used on this telescope; so when shopping for extras keep that in mind.