Optical Accessories

ZWO 1/3″ 2.1mm 150 degree lensTechnical Parameter:Format support: 1/3″ sensorFocal length: 2.1mmWide angel: 150 degreeMatch Model：ASI120mm, ASI120m...

ZWO 2.5mm 170 degree lensTechnical Parameter:Format support: 1/2″ sensorFocal length: 2.5mmWide angel: 170 degreeMatch Model：ASI178MM, ASI178MC, AS...

AR Protective WindowZWO D21 AR protect windowTechnical Parameter:Diameter: 21mmType: AR windowThickness: 1.1mmFlatness: 1/4 λProtect the sensor fro...

ZWO ADC is voted as “ HOT SKY PRODUCT – 2017” by SKY&TELESCOPE magazine! Specifications

The ZWO Methane band (CH4) filter is a special filter for photographical use.Its FWHM is 20nm which is suitable for most IR sensetive color or mono...

2.8mm-12mm F1.4 lens is suitable for ASI120MM/MC，ASI290MM/MC and ASI224MCThis lens has bigger diameter than the 2.1mm lens come with ASI120MM/MC.It...

ZWO Duo-Band Filter is a dual narrowband filter primarily aimed at complementing our range of colour ASI cameras. The Duo-Band filter is aimed at t...

Shortens the Focal Ratio of the FF107APO & FF130APO Focal Ratio shortened to f/4.9 Reduces th...

Shortens the Focal Ratio of the FF65APO Focal Ratio from f/6.4 to f/4.8 Reduces the Focal Length to 312mm Reduction Factor of 0.75x Standard 55mm ...

Shortens the Focal Ratio of the FF80APO Focal Ratio from f/7.5 to f/5.7 Reduces the Focal Length ...

ZWO filter masks are used for ZWO filter wheels.Please use the M2 screws and masks to fix the filters:⚫ Remove the screws securing the back cover a...

ZWO 1.25″ IR 850nm Pass Filter suitable for IR sensitive cameras. You don’t need to debayer and get the full resolution of this sensor when use it ...

UV IR-CUT Protective WindowZWO D21 UV IR-CUT protect windowTechnical Parameter:Diameter: 21mmType: UV IR-cut windowThickness: 1.1mmFlatness: 1/4 λM...

The new ZWO LRGB Filters are designed to approximately equalize the flux of ASI1600 mono sensorBetter transmission, Better coating, Better color...

7nm Bandpass for Precision Imaging Enhanced Nebula Imaging Light Pollution Suppression ...

7nm Bandpass for Precision Imaging Enhanced Nebula Imaging Light Pollution Suppression ...

7nm Bandpass for Precision Imaging Enhanced Nebula Imaging Light Pollution Suppression ...

Precise 7nm Bandpass Enhanced Contrast for Emission Nebulae Light Pollution Reduction ...

IR-Cut 1.25" or 2" Thread Size Description Specifications Diagrams & Ressources In the ...

Perfect Compatibility Vixen-Style Design Sturdy and Durable Easy Installation ...