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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.

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    $148.00 USD
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    $148.00 USD
    $133.00 USD
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    $133.00 USD

    William Optics 50mm Guiding Scope

    Options available

    Make it easier to find and track guide stars User-friendly and can be set up quickly Description The William Optics 50mm Guiding ...

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    $148.00 USD
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    $133.00 USD
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    $133.00 USD
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    $49.00 USD
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    $49.00 USD
    $44.00 USD
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    $44.00 USD

    William Optics 75mm -110mm Bahtinov Focusing Mask

    WO-BM-DS-GR45

    Precise focusing aid for telescopes with apertures between 75mm and 110mm Adjustable design to fit various telescope sizes within the specif...

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    $49.00 USD
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    $49.00 USD
    $44.00 USD
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    $44.00 USD
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    $58.00 USD
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    $58.00 USD
    $52.00 USD
    $52.00 USD - $52.00 USD
    $52.00 USD

    William Optics 81mm Carry Soft Case

    WO-BG1-P002

    Soft carry case designed specifically for 81mm William Optics telescopes Offers protection and convenience for tran...

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    $58.00 USD
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    $58.00 USD
    $52.00 USD
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    $52.00 USD
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    $96.00 USD
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    $96.00 USD
    $86.00 USD
    $86.00 USD - $86.00 USD
    $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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    $96.00 USD
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    $96.00 USD
    $86.00 USD
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    $86.00 USD
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    $168.00 USD
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    $168.00 USD
    $151.00 USD
    $151.00 USD - $151.00 USD
    $151.00 USD

    William Optics 98/102/103/110 Soft Case

    WO-BG1-P001

    Soft carry case designed specifically for William Optics 98mm, 102mm, 103mm, and 110mm telescopes Offers protection...

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    $168.00 USD
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    $168.00 USD
    $151.00 USD
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    $151.00 USD
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    $110.00 USD
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    $110.00 USD
    $99.00 USD
    $99.00 USD - $99.00 USD
    $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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    $110.00 USD
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    $110.00 USD
    $99.00 USD
    $99.00 USD - $99.00 USD
    $99.00 USD
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    $158.00 USD
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    $158.00 USD
    $142.00 USD
    $142.00 USD - $142.00 USD
    $142.00 USD

    William Optics 99% Dielectric Dura Bright Diagonal - 2"

    WO-D-DIG2D-C-DB-T
    5 in stock

    High-quality 2" diagonal for refractor and catadioptric telescopes 99% reflectivity dielectric coating for maximum light transmission ...

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    $158.00 USD
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    $158.00 USD
    $142.00 USD
    $142.00 USD - $142.00 USD
    $142.00 USD
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    $229.00 USD
    $229.00 USD - $229.00 USD
    $229.00 USD
    $206.00 USD
    $206.00 USD - $206.00 USD
    $206.00 USD

    William Optics Adjustable Flat61 for Z61

    WO-P-FLAT61A

    Adjustable field flattener specifically designed for the William Optics Z61 telescope Improves edge-to-edge sharpness for astrophotography w...

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    $229.00 USD
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    $229.00 USD
    $206.00 USD
    $206.00 USD - $206.00 USD
    $206.00 USD
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    $229.00 USD
    $229.00 USD - $229.00 USD
    $229.00 USD
    $206.00 USD
    $206.00 USD - $206.00 USD
    $206.00 USD

    William Optics Adjustable Flat6AIII

    WO-P-FLAT6AIII
    2 in stock

    Versatile field flattener for William Optics refractor telescopes Adjustable design for optimal performance with various camera setups ...

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    $229.00 USD
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    $229.00 USD
    $206.00 USD
    $206.00 USD - $206.00 USD
    $206.00 USD
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    $293.00 USD
    $293.00 USD - $293.00 USD
    $293.00 USD
    $264.00 USD
    $264.00 USD - $264.00 USD
    $264.00 USD

    William Optics Adjustable Flat6AIII for FLT91

    WO-P-FLAT6AIII-M92

    0.8x reducer For William Optics FLT91 refractor Description The William Optics Adjustable Flat6AIII for FLT91 is a special editio...

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    $293.00 USD
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    $293.00 USD
    $264.00 USD
    $264.00 USD - $264.00 USD
    $264.00 USD
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    $229.00 USD
    $229.00 USD - $229.00 USD
    $229.00 USD
    $206.00 USD
    $206.00 USD - $206.00 USD
    $206.00 USD

    William Optics Adjustable Flat73A for Z73

    WO-P-FLAT73A
    1 in stock

    Improves edge-to-edge sharpness for astrophotography 43mm image circle Adjustable design 66.2mm back focus Description Specifications In the Bo...

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    $229.00 USD
    $229.00 USD - $229.00 USD
    $229.00 USD
    $206.00 USD
    $206.00 USD - $206.00 USD
    $206.00 USD
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    $284.00 USD
    $284.00 USD - $284.00 USD
    $284.00 USD
    $256.00 USD
    $256.00 USD - $256.00 USD
    $256.00 USD

    William Optics Adjustable Reducer Flattener Flat61R for Z61

    WO-P-FLAT61R

    Adjustable reducer and field flattener for William Optics Z61 telescope Improves image sharpness and reduces distortion Description ...

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    $284.00 USD
    $284.00 USD - $284.00 USD
    $284.00 USD
    $256.00 USD
    $256.00 USD - $256.00 USD
    $256.00 USD
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    $284.00 USD
    $284.00 USD - $284.00 USD
    $284.00 USD
    $256.00 USD
    $256.00 USD - $256.00 USD
    $256.00 USD

    William Optics Adjustable Reducer Flattener Flat73R for Z73

    WO-P-FLAT73R

    Adjustable reducer and field flattener for William Optics Z73 telescope Improves image sharpness and reduces distortion Description ...

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    $284.00 USD
    $284.00 USD - $284.00 USD
    $284.00 USD
    $256.00 USD
    $256.00 USD - $256.00 USD
    $256.00 USD
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    $102.00 USD
    $102.00 USD - $102.00 USD
    $102.00 USD
    $92.00 USD
    $92.00 USD - $92.00 USD
    $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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    $102.00 USD
    $102.00 USD - $102.00 USD
    $102.00 USD
    $92.00 USD
    $92.00 USD - $92.00 USD
    $92.00 USD
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    $113.00 USD
    $113.00 USD - $113.00 USD
    $113.00 USD
    $102.00 USD
    $102.00 USD - $102.00 USD
    $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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    $113.00 USD
    $113.00 USD - $113.00 USD
    $113.00 USD
    $102.00 USD
    $102.00 USD - $102.00 USD
    $102.00 USD
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    $185.00 USD
    $185.00 USD - $185.00 USD
    $185.00 USD
    $167.00 USD
    $167.00 USD - $167.00 USD
    $167.00 USD

    William Optics Bahtinov Mask Cover for Takahashi FSQ106

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    Bahtinov mask cover for Takahashi FSQ106 telescope Enhances focusing accuracy for astrophotography Description The William Optics Ba...

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    $185.00 USD
    $185.00 USD - $185.00 USD
    $185.00 USD
    $167.00 USD
    $167.00 USD - $167.00 USD
    $167.00 USD
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    $137.00 USD
    $137.00 USD - $137.00 USD
    $137.00 USD
    $123.00 USD
    $123.00 USD - $123.00 USD
    $123.00 USD

    William Optics Bahtinov Mask Cover for WO 102 & 103 Series Telescopes

    Options available

    Bahtinov mask cover for William Optics 102 & 103 Series telescopes Enhances focusing accuracy for astrophotography Description T...

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    $137.00 USD
    $137.00 USD - $137.00 USD
    $137.00 USD
    $123.00 USD
    $123.00 USD - $123.00 USD
    $123.00 USD
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    $196.00 USD
    $196.00 USD - $196.00 USD
    $196.00 USD
    $176.00 USD
    $176.00 USD - $176.00 USD
    $176.00 USD

    William Optics Bahtinov Mask Cover for WO FLT132

    Options available

    Precision focusing aid for the William Optics FLT132 telescope Custom-designed to fit the FLT132 model perfectly Description T...

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    $196.00 USD
    $196.00 USD - $196.00 USD
    $196.00 USD
    $176.00 USD
    $176.00 USD - $176.00 USD
    $176.00 USD
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    $90.00 USD
    $90.00 USD - $90.00 USD
    $90.00 USD
    $81.00 USD
    $81.00 USD - $81.00 USD
    $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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    $90.00 USD
    $90.00 USD - $90.00 USD
    $90.00 USD
    $81.00 USD
    $81.00 USD - $81.00 USD
    $81.00 USD
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    $310.00 USD
    $310.00 USD - $310.00 USD
    $310.00 USD
    $279.00 USD
    $279.00 USD - $279.00 USD
    $279.00 USD

    William Optics Binoviewer Complete Package

    WO-E-BINO-P

    Enhances visual astronomy with comfortable two-eye viewing Complete package includes binoviewer, eyepieces, and accessories Descriptio...

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    $310.00 USD
    $310.00 USD - $310.00 USD
    $310.00 USD
    $279.00 USD
    $279.00 USD - $279.00 USD
    $279.00 USD
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    $67.00 USD
    $67.00 USD - $67.00 USD
    $67.00 USD
    $60.00 USD
    $60.00 USD - $60.00 USD
    $60.00 USD

    William Optics Birding 250mm Duelside Plate (Manfrotto & Arca Swiss Type) - DISCONTINUED

    WO-M-PMA250

    Work with Vixen-style dovetail bars Made of durable materials Description The William Optics Birding 250mm Duelside Plate is an acces...

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    $67.00 USD
    $67.00 USD - $67.00 USD
    $67.00 USD
    $60.00 USD
    $60.00 USD - $60.00 USD
    $60.00 USD
    Sold out
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    $109.00 USD
    $109.00 USD - $109.00 USD
    $109.00 USD
    $98.00 USD
    $98.00 USD - $98.00 USD
    $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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    $109.00 USD
    $109.00 USD - $109.00 USD
    $109.00 USD
    $98.00 USD
    $98.00 USD - $98.00 USD
    $98.00 USD
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    $64.00 USD
    $64.00 USD - $64.00 USD
    $64.00 USD
    $58.00 USD
    $58.00 USD - $58.00 USD
    $58.00 USD

    William Optics Canon EOS Camera Adapter

    WO-AD4-A009-L00BL03

    Allows attachment of Canon EOS cameras to William Optics telescopes Ensures a secure and stable connection for astrophotography Description ...

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    $64.00 USD
    $64.00 USD - $64.00 USD
    $64.00 USD
    $58.00 USD
    $58.00 USD - $58.00 USD
    $58.00 USD
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    $208.00 USD
    $208.00 USD - $208.00 USD
    $208.00 USD
    $187.00 USD
    $187.00 USD - $187.00 USD
    $187.00 USD

    William Optics Carry Soft Case for FLT132

    WO-BG1-P005

    Soft carry case designed specifically for the William Optics FLT132 telescope Offers protection and convenience for...

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    $208.00 USD
    $208.00 USD - $208.00 USD
    $208.00 USD
    $187.00 USD
    $187.00 USD - $187.00 USD
    $187.00 USD
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