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ZWO Seestar S30 Desktop
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

Country

William Optics

William Optics

  • Original price $130.00 USD
    Original price $130.00 USD - Original price $130.00 USD
    Original price $130.00 USD
    Current price $117.00 USD
    $117.00 USD - $117.00 USD
    Current price $117.00 USD

    William Optics SWAN 72° 40mm Eyepiece - 2"

    WO-E-SWA40

    2-inch eyepiece with 72° apparent field of view 40mm focal length for wide-field, low-magnification viewing Description The Wi...

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    Original price $130.00 USD
    Original price $130.00 USD - Original price $130.00 USD
    Original price $130.00 USD
    Current price $117.00 USD
    $117.00 USD - $117.00 USD
    Current price $117.00 USD
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  • Original price $123.00 USD
    Original price $123.00 USD - Original price $123.00 USD
    Original price $123.00 USD
    Current price $111.00 USD
    $111.00 USD - $111.00 USD
    Current price $111.00 USD

    William Optics STL Adapter for FLT Flattener

    WO-P-STL

    STL adapter designed for William Optics FLT flatteners Ensures a secure connection between your FLT flattener and S...

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    Original price $123.00 USD
    Original price $123.00 USD - Original price $123.00 USD
    Original price $123.00 USD
    Current price $111.00 USD
    $111.00 USD - $111.00 USD
    Current price $111.00 USD
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  • Original price $116.00 USD
    Original price $116.00 USD - Original price $116.00 USD
    Original price $116.00 USD
    Current price $104.00 USD
    $104.00 USD - $104.00 USD
    Current price $104.00 USD

    William Optics Losmandy Style Type D

    Options available

    Losmandy-style dovetail plate (Type D) by William Optics Compatible with a variety of telescopes and mounts ...

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    Original price $116.00 USD
    Original price $116.00 USD - Original price $116.00 USD
    Original price $116.00 USD
    Current price $104.00 USD
    $104.00 USD - $104.00 USD
    Current price $104.00 USD
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  • Original price $114.00 USD
    Original price $114.00 USD - Original price $114.00 USD
    Original price $114.00 USD
    Current price $103.00 USD
    $103.00 USD - $103.00 USD
    Current price $103.00 USD

    William Optics Slide-Base UniGuide 32mm Scope

    Options available
    12 variants in stock

    Compact 32mm guide scope 120mm focal length For use with 1.25" guide cameras Description Upgrade your astrophotography equipment with the Wi...

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    Original price $114.00 USD
    Original price $114.00 USD - Original price $114.00 USD
    Original price $114.00 USD
    Current price $103.00 USD
    $103.00 USD - $103.00 USD
    Current price $103.00 USD
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  • Original price $113.00 USD
    Original price $113.00 USD - Original price $113.00 USD
    Original price $113.00 USD
    Current price $102.00 USD
    $102.00 USD - $102.00 USD
    Current price $102.00 USD

    William Optics Bahtinov Mask Cover for GT81 / Z81

    Options available

    Bahtinov mask cover for William Optics GT81 and Z81 telescopes Enhances focusing accuracy for astrophotography Description The Willi...

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    Original price $113.00 USD
    Original price $113.00 USD - Original price $113.00 USD
    Original price $113.00 USD
    Current price $102.00 USD
    $102.00 USD - $102.00 USD
    Current price $102.00 USD
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  • Original price $110.00 USD
    Original price $110.00 USD - Original price $110.00 USD
    Original price $110.00 USD
    Current price $99.00 USD
    $99.00 USD - $99.00 USD
    Current price $99.00 USD

    William Optics 99% Dielectric Dura Bright Diagonal - 1.25"

    WO-D-125D-C-DB
    1 in stock

    High-quality 1.25" diagonal for refractor and catadioptric telescopes 99% reflectivity dielectric coating for maximum light transmission ...

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    Original price $110.00 USD
    Original price $110.00 USD - Original price $110.00 USD
    Original price $110.00 USD
    Current price $99.00 USD
    $99.00 USD - $99.00 USD
    Current price $99.00 USD
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  • Original price $109.00 USD
    Original price $109.00 USD - Original price $109.00 USD
    Original price $109.00 USD
    Current price $98.00 USD
    $98.00 USD - $98.00 USD
    Current price $98.00 USD

    William Optics Camera Angle Rotator for 2.5" M63 Focuser

    WO-M-CAA63
    2 in stock

    Camera angle rotator designed for William Optics 2.5" M63 focuser Allows precise adjustment of the camera angle for...

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    Original price $109.00 USD
    Original price $109.00 USD - Original price $109.00 USD
    Original price $109.00 USD
    Current price $98.00 USD
    $98.00 USD - $98.00 USD
    Current price $98.00 USD
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  • Original price $109.00 USD
    Original price $109.00 USD - Original price $109.00 USD
    Original price $109.00 USD
    Current price $98.00 USD
    $98.00 USD - $98.00 USD
    Current price $98.00 USD

    William Optics Cellphone Holder Telescope Adapter

    WO-CLA20

    Universal adapter for smartphone astrophotography Compatible with a wide range of smartphones and telescope eyepieces Description ...

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    Original price $109.00 USD
    Original price $109.00 USD - Original price $109.00 USD
    Original price $109.00 USD
    Current price $98.00 USD
    $98.00 USD - $98.00 USD
    Current price $98.00 USD
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  • Original price $108.00 USD
    Original price $108.00 USD - Original price $108.00 USD
    Original price $108.00 USD
    Current price $97.00 USD
    $97.00 USD - $97.00 USD
    Current price $97.00 USD

    William Optics SPL 55° 12.5mm Eyepiece - 1.25"

    WO-E-SPL12.5

    1.25-inch eyepiece with 55° apparent field of view 12.5mm focal length for medium-high magnification viewing Description The W...

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    Original price $108.00 USD
    Original price $108.00 USD - Original price $108.00 USD
    Original price $108.00 USD
    Current price $97.00 USD
    $97.00 USD - $97.00 USD
    Current price $97.00 USD
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  • Original price $102.00 USD
    Original price $102.00 USD - Original price $102.00 USD
    Original price $102.00 USD
    Current price $92.00 USD
    $92.00 USD - $92.00 USD
    Current price $92.00 USD

    William Optics 120mm Saddle Handle Bar with 50mm Guiding Rings

    WO-M-HC120BL-GR50SL

    Provide a stable platform for attaching guiding scopes and other accessories User-friendly and can be set up quickly Makes it easy to carry and...

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    Original price $102.00 USD
    Original price $102.00 USD - Original price $102.00 USD
    Original price $102.00 USD
    Current price $92.00 USD
    $92.00 USD - $92.00 USD
    Current price $92.00 USD
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  • Original price $102.00 USD
    Original price $102.00 USD - Original price $102.00 USD
    Original price $102.00 USD
    Current price $92.00 USD
    $92.00 USD - $92.00 USD
    Current price $92.00 USD

    William Optics Bahtinov Mask Cover for GT71 / Z73 / Star71II

    Options available

    Bahtinov mask cover for William Optics GT71, Z73, and Star71II telescopes Enhances focusing accuracy for astrophotography Description ...

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    Original price $102.00 USD
    Original price $102.00 USD - Original price $102.00 USD
    Original price $102.00 USD
    Current price $92.00 USD
    $92.00 USD - $92.00 USD
    Current price $92.00 USD
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  • Original price $99.00 USD
    Original price $99.00 USD - Original price $99.00 USD
    Original price $99.00 USD
    Current price $89.00 USD
    $89.00 USD - $89.00 USD
    Current price $89.00 USD

    William Optics 2" RotoLock Adapter - SCT

    WO-D-ROTO-A2-SCT2F

    Designed for Schmidt-Cassegrain Telescopes (SCT) Features a secure RotoLock mechanism for 2" accessories Description The Willi...

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    Original price $99.00 USD
    Original price $99.00 USD - Original price $99.00 USD
    Original price $99.00 USD
    Current price $89.00 USD
    $89.00 USD - $89.00 USD
    Current price $89.00 USD
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  • Original price $97.00 USD
    Original price $97.00 USD - Original price $97.00 USD
    Original price $97.00 USD
    Current price $87.00 USD
    $87.00 USD - $87.00 USD
    Current price $87.00 USD

    William Optics 120mm Saddle Handle Bar with 50mm Guiding Rings - No Adjustments Screws

    WO-M-HC120BL-GR50IISL

    Seamlessly integrate with your existing astrophotography gear. Eliminates the need for constant adjustments. Description In the box ...

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    Original price $97.00 USD
    Original price $97.00 USD - Original price $97.00 USD
    Original price $97.00 USD
    Current price $87.00 USD
    $87.00 USD - $87.00 USD
    Current price $87.00 USD
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  • Original price $96.00 USD
    Original price $96.00 USD - Original price $96.00 USD
    Original price $96.00 USD
    Current price $86.00 USD
    $86.00 USD - $86.00 USD
    Current price $86.00 USD

    William Optics 90° Erect Prism - 1.25"

    WO-D-EP90-125II

    90-degree erecting prism for 1.25" telescope eyepieces Provides correct image orientation for terrestrial and astronomical viewing Des...

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    Original price $96.00 USD
    Original price $96.00 USD - Original price $96.00 USD
    Original price $96.00 USD
    Current price $86.00 USD
    $86.00 USD - $86.00 USD
    Current price $86.00 USD
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  • Original price $92.00 USD
    Original price $92.00 USD - Original price $92.00 USD
    Original price $92.00 USD
    Current price $83.00 USD
    $83.00 USD - $83.00 USD
    Current price $83.00 USD

    William Optics 45° Erecting Prism - 1.25"

    WO-D-EP125

    45-degree erecting prism for 1.25" telescope eyepieces Provides correct image orientation for terrestrial and astronomical viewing Des...

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    Original price $92.00 USD
    Original price $92.00 USD - Original price $92.00 USD
    Original price $92.00 USD
    Current price $83.00 USD
    $83.00 USD - $83.00 USD
    Current price $83.00 USD
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  • Original price $91.00 USD
    Original price $91.00 USD - Original price $91.00 USD
    Original price $91.00 USD
    Current price $82.00 USD
    $82.00 USD - $82.00 USD
    Current price $82.00 USD

    William Optics Long Version Vixen-Style Dovetail Plate

    WO-M-PV-LII

    Increased stability, especially for heavier or longer optical tubes. Designed to fit Vixen-style dovetail mounts Description Th...

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    Original price $91.00 USD
    Original price $91.00 USD - Original price $91.00 USD
    Original price $91.00 USD
    Current price $82.00 USD
    $82.00 USD - $82.00 USD
    Current price $82.00 USD
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  • Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD

    William Optics Mortar Pier Head Adapter - 3/8" Screw Mount

    WO-YG-38-MTAD-BL

    Designed to fit a 3/8" threaded pier. Universal 3/8" thread Limited lifetime warranty Description Warranty The William Optics M...

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    Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD
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  • Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD

    William Optics 243mm Saddle Handle Bar

    WO-M-HC243BL

    Provide a stable platform for attaching guiding scopes and other accessories User-friendly and can be set up quickly Makes it easy to carry and ma...

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    Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD
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  • Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD

    William Optics Super High Precision COPPER T-Mount for Nikon Full Frame

    WO-YE-TR-BR48-N

    Super high precision T-Mount designed for Nikon full-frame cameras Constructed from durable copper for enhanced sta...

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    Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD
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  • Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD

    William Optics Super High Precision COPPER T-Mount for Canon EOS Full Frame

    WO-YE-TR-BR48-C
    1 in stock

    Super high precision T-Mount designed for Canon EOS full-frame cameras Constructed from durable copper for enhanced...

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    Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD
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  • Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD

    William Optics Bahtinov Mask Cover for WO Z61

    Options available

    Precision focusing aid for the William Optics Z61 telescope Custom-designed to fit the Z61 model perfectly Description The Wil...

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    Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD
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  • Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD

    William Optics 243-308mm Bahtinov Focusing Mask

    WO-BM-DS-GR150
    1 in stock

    Designed for telescopes with apertures between 243mm and 308mm Precise focusing aid for large aperture telescopes and astrophotography ...

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    Original price $90.00 USD
    Original price $90.00 USD - Original price $90.00 USD
    Original price $90.00 USD
    Current price $81.00 USD
    $81.00 USD - $81.00 USD
    Current price $81.00 USD
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  • Original price $88.00 USD
    Original price $88.00 USD - Original price $88.00 USD
    Original price $88.00 USD
    Current price $79.00 USD
    $79.00 USD - $79.00 USD
    Current price $79.00 USD

    William Optics 2" RotoLock - M63

    WO-F-ROTO-A63SL

    2" RotoLock adapter designed for M63 threads Ensures a secure and precise connection for 2" accessories ...

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    Original price $88.00 USD
    Original price $88.00 USD - Original price $88.00 USD
    Original price $88.00 USD
    Current price $79.00 USD
    $79.00 USD - $79.00 USD
    Current price $79.00 USD
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  • Original price $87.00 USD
    Original price $87.00 USD - Original price $87.00 USD
    Original price $87.00 USD
    Current price $78.00 USD
    $78.00 USD - $78.00 USD
    Current price $78.00 USD

    William Optics 1.25" RotoLock Visual Back Adapter - SCT

    WO-F-ROTO-A2-125-SCT-TA

    1.25" RotoLock visual back adapter designed for SCT threads Ensures a secure and precise connection for 1.25" acces...

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    Original price $87.00 USD
    Original price $87.00 USD - Original price $87.00 USD
    Original price $87.00 USD
    Current price $78.00 USD
    $78.00 USD - $78.00 USD
    Current price $78.00 USD
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