ZWO EFW Electronic Filter Wheels

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

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...

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...

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...

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....

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 Nikon F-mount lenses to ZWO Electronic Filter Wheels Engineered for cameras with 6.5mm back focus Provides 20 mm of spacing Standard M42x...

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 seven 50mm square unmounted filters Designed for large-format sensors like the ZWO ASI461MM Pro Direct bolt-on connection for maximum rigidi...