Products

For 1.25" or 31mm filters Easy to install on the telescope and the camera Filters are easy to ins...

For 1.25" or 31mm filters Easy to install on the telescope and the camera Filters are easy to ins...

5 filter positions for 1.25" or 31mm filters Adds 20 mm of back focus to the imaging train USB-C powered and controlled Redesigned housing for imp...

Holds 5 x 2" mounted or 50mm unmounted filters Adds only 20 mm of back focus to the imaging train Stepper motor for precise, repeatable filter sel...

Holds seven 2" mounted or 50mm unmounted filters Adds 20 mm of back focus to the imaging train Stepper motor for precise, quiet filter selection S...

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 7 individual 50mm square filters Designed for large format monochrome cameras like the ASI461MM Pro Adds only 16mm of optical path length to...

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

Connects Canon EOS lenses to a ZWO 2" Electronic Filter Wheel M54x0.75 male thread that threads directly into the 2" EFW Enables filtered, wide-fi...

Connects Canon EF lenses to ZWO Electronic Filter Wheels (EFW); EF-S lenses are not supported Engineered for ZWO cameras with 6.5mm back focus (e....

0.7x Focal Reduction Factor Designed for ZWO FF107 & FF130 APO Refractors Triplet Optical Design with 1 ED Element Standard 55mm Back Focus In...

Telescope: ZWO FF110-APO 110mm f/7 Quadruplet Refractor Image Circle: 44mm, covers full-frame sensors natively Mount: ZWO AM5N Harmonic Drive E...

ZWO FF110-APO 110mm f/7 Quadruplet Refractor ZWO AM7 Harmonic Drive Mount with 44 lb. Counterweight-Free Payload ZWO TC40 Carbon Fiber Tripod with...

110mm Aperture 766mm Focal Length (f/7) 4-Element Apochromatic Optics 44mm Corrected Image Circle 3-inch Dual-Speed Rack & Pinion Focuser 14.9...

Telescope: 131mm f/7.5 Quadruplet Apochromatic Refractor Image Circle: 44mm native flat-field, full-frame coverage Mount: AM5N Harmonic Drive w...

Telescope: ZWO FF131 APO 131mm f/7.5 Quadruplet Refractor Image Circle: 44mm, corrected for full-frame sensors Mount: ZWO AM7 Strain-Wave GoTo ...

131mm (5.15") Aperture 983mm Focal Length (f/7.5) 4-Element Quadruplet Apochromatic Optics 44mm Flat-Field Image Circle 3" Dual-Speed Rack & P...

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...

Complete astrophotography bundle including telescope, mount, tripod, and pier extension ZWO FF70 APO: 70mm f/7 quadruplet refractor with a native ...

70mm Aperture 490mm Focal Length (f/7) 4-Element Quadruplet Apochromatic Optics 44mm Full-Frame Image Circle Native Flat-Field Design 2.4" Dual-Sp...

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...

Telescope: ZWO FF90 90mm f/6.8 Quadruplet APO Refractor Mount: ZWO AM3N Harmonic Drive GoTo Mount Tripod: ZWO TC40 Carbon Fiber Tripod Pier Ex...

90mm Aperture 609mm Focal Length (f/6.8) 4-Element Quadruplet Optical Design 44mm Full-Frame Image Circle 3" Dual-Speed Rack & Pinion Focuser ...

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...