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Due to the USA–China tariff escalation, we will temporarily not receive additional inventory for Celestron and Sky-Watcher products. As a result, we are unable to accept orders for any out-of-stock items and encourage you to take advantage of the products currently in stock while supplies last.
Due to the USA–China tariff escalation, we will temporarily not receive additional inventory for Celestron and Sky-Watcher products. As a result, we are unable to accept orders for any out-of-stock items and encourage you to take advantage of the products currently in stock while supplies last.

Optical Accessories

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  • CA$31.00 - CA$31.00
    CA$31.00
    CA$31.00 - CA$31.00
    CA$31.00

    ZWO 1/3" 2.1mm 150° lens

    ZWO-LENS-2.1
    1 in stock

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

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    CA$31.00 - CA$31.00
    CA$31.00
    CA$31.00 - CA$31.00
    CA$31.00
  • CA$31.00 - CA$31.00
    CA$31.00
    CA$31.00 - CA$31.00
    CA$31.00

    ZWO 2.5mm 170° lens

    ZWO-LENS-2-5
    1 in stock

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

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    CA$31.00 - CA$31.00
    CA$31.00
    CA$31.00 - CA$31.00
    CA$31.00
  • CA$23.00 - CA$41.00
    CA$23.00 - CA$41.00
    CA$23.00 - CA$41.00
    CA$23.00

    ZWO AR Protective Window

    Options available

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

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    CA$23.00 - CA$41.00
    CA$23.00 - CA$41.00
    CA$23.00 - CA$41.00
    CA$23.00
  • CA$182.00 - CA$182.00
    CA$182.00
    CA$182.00 - CA$182.00
    CA$182.00

    ZWO Atmospheric Dispersion Corrector

    ZWO-ADC
    1 in stock

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

    CA$182.00 - CA$182.00
    CA$182.00
    CA$182.00 - CA$182.00
    CA$182.00
  • CA$141.00 - CA$141.00
    CA$141.00
    CA$141.00 - CA$141.00
    CA$141.00

    ZWO CH4 Methane Filter - 20nm 1.25"

    ZWO-CH4
    1 in stock

    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...

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    CA$141.00 - CA$141.00
    CA$141.00
    CA$141.00 - CA$141.00
    CA$141.00
  • CA$54.00 - CA$54.00
    CA$54.00
    CA$54.00 - CA$54.00
    CA$54.00

    ZWO CS Lens 2.8mm-12mm F1.4

    ZWO-LENS-2.8-12
    1 in stock

    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...

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    CA$54.00 - CA$54.00
    CA$54.00
    CA$54.00 - CA$54.00
    CA$54.00
  • CA$112.00 - CA$212.00
    CA$112.00 - CA$212.00
    CA$112.00 - CA$212.00
    CA$112.00

    ZWO Duo-Band Filter

    Options available
    9 variants in stock

    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...

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    CA$112.00 - CA$212.00
    CA$112.00 - CA$212.00
    CA$112.00 - CA$212.00
    CA$112.00
  • CA$489.00 - CA$489.00
    CA$489.00
    CA$489.00 - CA$489.00
    CA$489.00

    ZWO FF107/FF130 APO 0.7× Universal Reducer

    ZWO-F107130RE

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

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    CA$489.00 - CA$489.00
    CA$489.00
    CA$489.00 - CA$489.00
    CA$489.00
  • CA$279.00 - CA$279.00
    CA$279.00
    CA$279.00 - CA$279.00
    CA$279.00

    ZWO FF65 APO 0.75× Full Frame Reducer

    ZWO-F65RE
    1 in stock

    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 ...

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    CA$279.00 - CA$279.00
    CA$279.00
    CA$279.00 - CA$279.00
    CA$279.00
  • CA$349.00 - CA$349.00
    CA$349.00
    CA$349.00 - CA$349.00
    CA$349.00

    ZWO FF80 APO 0.76× Full Frame Reducer

    ZWO-F80RE
    1 in stock

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

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    CA$349.00 - CA$349.00
    CA$349.00
    CA$349.00 - CA$349.00
    CA$349.00
  • CA$17.00 - CA$21.00
    CA$17.00 - CA$21.00
    CA$17.00 - CA$21.00
    CA$17.00

    ZWO Filter Masks

    Options available

    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...

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    CA$17.00 - CA$21.00
    CA$17.00 - CA$21.00
    CA$17.00 - CA$21.00
    CA$17.00
  • CA$31.00 - CA$31.00
    CA$31.00
    CA$31.00 - CA$31.00
    CA$31.00

    ZWO IR 850nm Pass Filter – 1.25"

    ZWO-850IR1-25

    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 ...

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    CA$31.00 - CA$31.00
    CA$31.00
    CA$31.00 - CA$31.00
    CA$31.00
  • CA$23.00 - CA$26.00
    CA$23.00 - CA$26.00
    CA$23.00 - CA$26.00
    CA$23.00

    ZWO IR-Cut Protective Window

    Options available

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

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    CA$23.00 - CA$26.00
    CA$23.00 - CA$26.00
    CA$23.00 - CA$26.00
    CA$23.00
  • CA$210.00 - CA$425.00
    CA$210.00 - CA$425.00
    CA$210.00 - CA$425.00
    CA$210.00

    ZWO LRGB Optimized Filters

    Options available

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

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    CA$210.00 - CA$425.00
    CA$210.00 - CA$425.00
    CA$210.00 - CA$425.00
    CA$210.00
  • CA$524.00 - CA$993.00
    CA$524.00 - CA$993.00
    CA$524.00 - CA$993.00
    CA$524.00

    ZWO Narrowband Filter Set - 7nm H-alpha, OIII & SII

    Options available

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

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    CA$524.00 - CA$993.00
    CA$524.00 - CA$993.00
    CA$524.00 - CA$993.00
    CA$524.00
  • CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00

    ZWO Narrowband H-alpha Filter - 7nm

    Options available
    1 variants in stock

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

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    CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00
  • CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00

    ZWO Narrowband OIII Filter - 7nm

    Options available
    1 variants in stock

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

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    CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00
  • CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00

    ZWO Narrowband SII Filter - 7nm

    Options available
    1 variants in stock

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

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    CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00 - CA$354.00
    CA$183.00
  • CA$31.00 - CA$70.00
    CA$31.00 - CA$70.00
    CA$31.00 - CA$70.00
    CA$31.00

    ZWO UV/IR CUT Filter

    Options available
    10 variants in stock

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

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    CA$31.00 - CA$70.00
    CA$31.00 - CA$70.00
    CA$31.00 - CA$70.00
    CA$31.00
  • CA$55.00 - CA$55.00
    CA$55.00
    CA$55.00 - CA$55.00
    CA$55.00

    ZWO V-Series Dovetail Groove for ASIAIR Pro

    ZWO-DOVE-AIR
    4 in stock

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

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    CA$55.00 - CA$55.00
    CA$55.00
    CA$55.00 - CA$55.00
    CA$55.00