The telescope optics: The new Skywatcher Quattro Newtonian telescope series with the fast f/4 aperture ratio was specially developed for high-quality astrophotography with short exposure times. But they are also fine telescopes for visual observation. Unlike the smaller Quattro models, the 12S is not equipped with panels but is blackened on the inside. The 2″ Linear Power Focuser with gear reduction contains 4 precise ball bearings to guide the extension tube stably and without shifting, even with heavy accessories. The ball bearings allow, better than a rack and pinion, the particularly soft adjustment with great precision. The 10:1 gear reduction on the second focusing knob allows a very fine adjustment, which is also suitable for the demanding user. The telescope is made with a parabolic mirror made of Pyrex, which has a low thermal expansion and thus enables faster cool-down times. Scope of delivery: 12″ Newtonian telescope with steel tube 9×50 viewfinder Parabolic 300mm primary mirror made of Pyrex 2″ dual speed 10:1 linear power focuser Pipe rings and mounting rail! Power supply and batteries are not included in the scope of delivery!