Skywatcher Autofocuser Northwest Africa 6284 very massive eyepiece clamp without

very massive eyepiece clamp without clamping screws (

the seasoned pro imager

stars will appear out of focus at the edge when used with a flat chip sensor of a digital camera

Camera Control port

with a large central obstruction

Skywatcher Autofocuser Northwest Africa 6284 very massive eyepiece clamp withoutHands free D. C. focusing device, for accurate focusing, with the minimum of vibration. Dual speed push button operation (fast & slow). Can be used with the following telescopes: Evostar models 90 102 120 150 Startravel models 80 102 120 150 Skyliner models 150 200 250 300 Explorer models150 200 250 300 Can also be used on Dual Speed Focusers, but this does require a small amount of modifying. Youtube videos are available detailing this.