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Focusers of telescopes. Types, difference, specifications
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Dual-Speed 2" Crayford Focuser for Sky-Watcher Refractors | First Light Optics
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Teleskop-Express: TS-Optics 1.25" Newtonian Focuser for 114 mm Newtonian Telescopes
Feather Touch® 3.0" Diameter - Dual Speed Telescope Focuser, 3.5" Draw tube travel, and Brake - Lunt Solar Systems
Teleskop-Express: TS-Optics 2.5" Rack and Pinion Focuser with M90x1 Connection and 360° Rotation
Teleskop-Express: TS-Optics 2" Dual Speed Crayford Focuser for Newtonian Telescopes
Skywatcher Dual Speed 2" Crayford Focuser For Refractors - Rother Valley Optics Ltd
Feather Touch® 3.5" Diameter Dual Speed Telescope Focuser Kit, 4.5" Draw Tube Travel, and Brake - Lunt Solar Systems
Telescope Electronic Focuser : 16 Steps (with Pictures) - Instructables
1.25inch/2inch All Metal Refractor Reflector Focuser For Astronomical telescope | eBay
