Skywatcher coma corrector, optimized for all f/5 Newtonian telescopes with a 2″ focuser. It delivers impressive wide-field observations with pinpoint stars up to the edge of the field of view. The magnification remains the same. The coma corrector is supplied with adapters for visual observation. For photography with a DSLR camera you need an M48x0.75 adapter to connect your camera.Sky-Watcher has adapters for Canon and Nikon in its range (Prod. Code 20237 & 20238) Scope of delivery: Coma corrector adapter set!Power supply and batteries are included not included in the delivery!