Astrophotography

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...

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...

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...

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...

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...

Converts ZWO CAA Rotator to M42 T-Threads Maintains 55mm Backfocus Standard CAA with M42 Plate Stays at 16.5mm Ideal for ASI533, ASI2600, and Othe...

Adds a precise 16.5mm of optical path length Connects male M42 (T2) threads to female M48 threads Essential for achieving standard 55mm back focus...

Establishes precise 55mm back focus with specific ZWO camera/filter wheel combinations Provides exactly 22.5 mm of optical path length Connects M4...

Adds exactly 16.5 mm of spacing to an M48 imaging train M48x0.75 male and female threads Wide 43.2 mm clear aperture prevents vignetting with full...

Converts female M48x0.75 threads to female M42x0.75 T-threads Adds 0mm of optical path length to the imaging train Durable black anodized aluminum...

Replaces the ZWO EFW to achieve 55mm back focus with the OAG-L Adds only 15 mm of optical length to the imaging train Holds a single 2-inch mounte...

Optical Length: 16.5mm Connection Side 1: M54x0.75 Male Thread Connection Side 2: M54x0.75 Female Thread Material: Anodized Aluminum Descriptio...

Adds precisely 21mm of optical path length M54x0.75 male and female threads for secure connections Prevents vignetting with full-frame sensors Mac...

Thread Compatibility Durable Construction Precision Engineering Lightweight Des...

Adds exactly 21mm of optical path length Connects M54 male threads to M48 female threads Standard 2-inch filter threading on the M48 side Black an...

M54 male threads on one side, M48 female threads on the other Zero-profile design preserves critical back focus Converts larger M54 ports to the c...

Corrects sensor tilt for sharp, round stars across the entire frame Adds a minimal 5 mm of optical path length to the imaging train Connects the Z...

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...

Attaches Nikon F-mount lenses to ZWO cameras Standard M42x0.75 T-thread camera interface 29mm main body length for 17.5mm back-focus cameras Inclu...

Eliminates Differential Flexure Reduces Overall System Weight Includes 1.25" Guide Camera Holder M48 and M48 to M42 Adapters Included Spacer and H...

Large 12mm x 12mm prism for brighter guide stars M68, M54, and M48 connection options 17.5mm thickness preserves 55mm backfocus Designed for ZWO A...