ZWO

Houses seven 36mm unmounted filters Adds a minimal 20mm of back focus to the imaging train 7-position carousel for LRGB, narrowband, or custom set...

Holds 8 x 1.25" or 31mm unmounted filters Adds 20 mm of back focus to the imaging train USB-powered stepper motor for precise filter selection Red...

Connects Canon EOS lenses to a ZWO 2" Electronic Filter Wheel M54x0.75 female thread for direct, secure attachment Enables filtered, wide-field as...

Connects Canon EOS lenses to ZWO Electronic Filter Wheels (EFW) Engineered for ZWO cameras with 6.5mm back focus (e.g., ASI1600) Establishes the c...

90mm Aperture 766mm Focal Length (f/7) 4-Element Apochromatic Optics Integrated Field Flattener 3-inch Dual-Speed Focuser 14.9 lb. Optical Tube We...

131mm Aperture 983mm Focal Length (f/7.5) 4-Element Petzval Optical Design 3-inch Dual-Speed Rack & Pinion Focuser 20.7 lb. Optical Tube Assem...

Reduces FF65 APO focal ratio to f/4.8 0.75x reduction factor for wider fields of view Standard 55mm back focus from the M48 thread Integrated M48x...

70mm Aperture 490mm Focal Length (f/7) 4-Element Quadruplet Optical Design Integrated Field Flattener 2.4" Dual-Speed Rack & Pinion Focuser 6....

0.76x focal reduction factor Designed for the ZWO FF80-APO Refractor Triplet optical design with one ED element Standard 55 mm back focus Integrat...

90mm Aperture 609mm Focal Length (f/6.8) 4-Element Quadruplet Optical Design 3" Dual-Speed Rack & Pinion Focuser 9.97 lb. Optical Tube Assembl...

Connects Canon EOS lenses to ZWO ASI cameras Accepts standard 2" mounted filters Magnetic holder for secure, fast filter changes Adds 26.5mm of op...

Adapts Nikon lenses to ZWO ASI cooled cameras Accepts standard 2-inch (M48x0.75 thread) mounted filters Ultra-thin 29 mm profile maintains focus I...

Accepts standard 2-inch mounted filters Adds a precise 21mm to the optical path M42 x 0.75 female threads on the camera side M48 x 0.75 female thr...

Connects to M54 x 0.75 threaded accessories Accepts standard 2" mounted filters Magnetic holder for quick filter changes Adjustable tension screw ...

Holds standard 2-inch (50.8mm) mounted filters M48x0.75 internal threads for secure filter mounting Enables pre-loading multiple filters for rapid...

Securely Mounts 36mm Unmounted Filters Compatible with All 7-Position ZWO 36mm EFWs Includes M2 Mounting Screws Prevents Internal Light Leaks D...

Attaches Vixen-style finders and guide scopes Direct mounting to ZWO ASIAIR Pro and Plus units Includes two M4 x 8 mm mounting screws CNC machined...

1.25" non-rotating helical focuser 6mm of precise focus travel 0.1mm adjustment accuracy M42 female threads for direct OAG attachment Maintains gu...

Passes Infrared Light > 850nm Dramatically Steadies Planetary Views in Poor Seeing Enables Daylight Planetary and Lunar Imaging Standard 1.25" ...

21 mm diameter protective window for select ZWO cameras Integrated UV/IR-Cut filter maintains natural color balance 1/4 λ surface flatness preserv...

1.25" (31.75mm) Threaded Filter Set Greater than 92% Transmission at Passband Balanced 1:1:1 RGB Exposure Weighting 1/4 Wavefront Polished Optical...

M42 adapter for main imaging camera Specifications

Adds exactly 21mm of spacing to an M42 optical train M42x0.75 female threads on one side, male threads on the other Machined aluminum with a black...