SKYWATCHER CLASSIC 250mm (10") DOBSONIAN Kit The focusing aid function allows

The focusing aid function allows to measure the HFD (Half Flux Diameter) of a selected star to reach the perfect focus

Also a closed tube does not suffer from tube currents that limit the resolution power

It is compatible with all ASI cooled cameras with 17

You may effectively use the mount as a Dobsonian telescope with manual pointing

SKYWATCHER CLASSIC 250mm (10") DOBSONIAN Kit The focusing aid function allowsThe SkyWatcher 10" Dobsonian is a large aperture Newtonian reflector telescope with fast f 5 focal ratio, ideal for wide field and deep sky observation. Big aperture means better light gathering power, letting you see prominent deep sky object such as nebulae, star clusters and many more. SkyWatcher Classic Dobsonians are equipped with a 2" Crayford focuser with locking screw and 1. 25" eyepiece adapter, allowing easy use of either eyepiece size. The