The focuser is attached to every telescope near the focal point of the light-collecting optics. As the name suggests, eyepieces can be inserted in the focuser. For astrophotography, the focusers hold cameras and bring them into focus. Therefore one speaks of focuser instead of focuser.
The focuser is a hybrid system of rack and ball bearing. It allows precise focusing with a reduction of 1:11.
Regardless of whether you connect a wide-angle eyepiece or a camera, this focuser improves the performance of your overall optical system. It is ideally suited for Skywatcher BD (Black Diamond) Newtonian telescopes and comparable models from other brands.
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