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Often the classic Crayford focusers are not able to keep perfectly in position the cameras or heavier visual accessories causing a continuous loss of focus. Our new 50.8mm Hybrid-Drive focuser for Schmidt-Cassegrain adds, below the focuser tube, a rack and pinion thus keeping even heavier instruments in position (load capacity up to 3 Kg). Below the focuser there is also a locking screw: closing it, you will be sure that your camera will not move any more!
The 50.8mm Hybrid-Drive focuser presents the connection for 50.8mm and 31.8mm accessories (comes with a handy 31.8mm reducer). It also features a convenient 1:11 fine focus gear, particularly useful when you need to focus at high magnification (for example, when taking pictures of the Moon or planets)
The focuser screws directly into the rear thread of Schmidt-Cassegrain telescopes providing a connection for both 50.8mm and 31.8mm accessories. It also adds to these telescopes the fine focus and eliminates the image shift problem (shift of the image when you focus using the internal SC focuser).
|Diameter||50,8mm with 31,8mm adapter|
|Micrometric focus knob||Yes|
|Loading up to (Kg)||3|
|Thickness when closed (mm)||100|