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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.

Optical Accessories

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  • $300.00 USD - $300.00 USD
    $300.00 USD
    $300.00 USD - $300.00 USD
    $300.00 USD

    Starlight Instruments Housing Only w/o SIPS Optics

    SI-SIPSHOUSING

    This is a complete housing without the SIPS optic. The housing can be used for astronomers that have more than 1 telescope and want to use the SIP...

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    $300.00 USD - $300.00 USD
    $300.00 USD
    $300.00 USD - $300.00 USD
    $300.00 USD
  • $850.00 USD - $850.00 USD
    $850.00 USD
    $850.00 USD - $850.00 USD
    $850.00 USD

    Starlight Instruments SIPS Coma Corrector

    SI-SIPS

    Starlight Instruments is proud to introduce a new Coma Corrector called the Starlight Integrated Paracorr System (referred to as SIPS hereafter). ...

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    $850.00 USD - $850.00 USD
    $850.00 USD
    $850.00 USD - $850.00 USD
    $850.00 USD
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    $58.00 USD - $58.00 USD
    $58.00 USD
    $58.00 USD - $58.00 USD
    $58.00 USD

    TS-Optics 0.5x Focal reducer - 1.25"

    TS-TSRED051

    The TS optics 0.5x reducer shortens the focal lengths of the telescope by 50% and doubles the lens speed and field of view. This advantage can be u...

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    $58.00 USD - $58.00 USD
    $58.00 USD
    $58.00 USD - $58.00 USD
    $58.00 USD
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    $210.00 USD - $210.00 USD
    $210.00 USD
    $210.00 USD - $210.00 USD
    $210.00 USD

    TS-Optics 0.67x Reducer for RC Telescopes - 2"

    TS-CCD47

    The 2" CCD compressor reduces the focal length of telescopes with the factor 0.67x, thus allowing significantly shorter exposure times.♦ The focal ...

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    $210.00 USD - $210.00 USD
    $210.00 USD
    $210.00 USD - $210.00 USD
    $210.00 USD
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    $281.00 USD - $281.00 USD
    $281.00 USD
    $281.00 USD - $281.00 USD
    $281.00 USD

    TS-Optics 0.79x Photoline Reducer Corrector - 2"

    TS-TSred279

    ♦ Reduction of the focal length 0.79x - exposure time goes to 62%♦ 3-element design with ED element for very good field correction♦ Easy telescope ...

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    $281.00 USD - $281.00 USD
    $281.00 USD
    $281.00 USD - $281.00 USD
    $281.00 USD
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    $220.00 USD - $220.00 USD
    $220.00 USD
    $220.00 USD - $220.00 USD
    $220.00 USD

    TS-Optics 1.0x Flattener and Field Corrector - 2"

    TS-TSFLAT2

    ♦ Suitable for all 2" focusers, the corrector is completely sunken into the focuser♦ Very good results with all popular refractors and apos of at l...

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    $220.00 USD - $220.00 USD
    $220.00 USD
    $220.00 USD - $220.00 USD
    $220.00 USD
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    $151.62 USD - $151.62 USD
    $151.62 USD
    $151.62 USD - $151.62 USD
    $151.62 USD

    TS-Optics 1.0x M48 Flattener and Field Corrector - 2"

    TS-WiflatM48

    ♦ Suitable for refractor telescopes up to 102 mm aperture or smaller (ED, apo, achromat, ...)♦ Connection telescope side 2" barrel with filter thr...

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    $151.62 USD - $151.62 USD
    $151.62 USD
    $151.62 USD - $151.62 USD
    $151.62 USD
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    $154.00 USD - $154.00 USD
    $154.00 USD
    $154.00 USD - $154.00 USD
    $154.00 USD

    TS-Optics 1.0x T2 Flattener and Field Corrector - 2"

    TS-WiflatT2

    ♦ Suitable for refractor telescopes up to 102 mm aperture or smaller (ED, apo, achromat, ...)♦ Connection telescope side 2" barrel with filter thre...

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    $154.00 USD - $154.00 USD
    $154.00 USD
    $154.00 USD - $154.00 USD
    $154.00 USD
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    $44.00 USD
    $44.00 USD - $44.00 USD
    $44.00 USD
    $40.00 USD
    $40.00 USD - $40.00 USD
    $40.00 USD

    William Optics 2x Barlow Nosepiece for Binoviewer

    WO-E-BINO-B2

    2x magnification Barlow lens specifically designed for binoviewers Increases magnification while maintaining focus with binoviewer setups ...

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    $44.00 USD
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    $44.00 USD
    $40.00 USD
    $40.00 USD - $40.00 USD
    $40.00 USD
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    $92.00 USD
    $92.00 USD - $92.00 USD
    $92.00 USD
    $83.00 USD
    $83.00 USD - $83.00 USD
    $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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    $92.00 USD
    $92.00 USD - $92.00 USD
    $92.00 USD
    $83.00 USD
    $83.00 USD - $83.00 USD
    $83.00 USD
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    $96.00 USD
    $96.00 USD - $96.00 USD
    $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
    $96.00 USD - $96.00 USD
    $96.00 USD
    $86.00 USD
    $86.00 USD - $86.00 USD
    $86.00 USD
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    $110.00 USD
    $110.00 USD - $110.00 USD
    $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
    $110.00 USD - $110.00 USD
    $110.00 USD
    $99.00 USD
    $99.00 USD - $99.00 USD
    $99.00 USD
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    $158.00 USD
    $158.00 USD - $158.00 USD
    $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
    $158.00 USD - $158.00 USD
    $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
    $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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    $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
    $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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    $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
    $293.00 USD - $293.00 USD
    $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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    $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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    $656.00 USD
    $656.00 USD - $656.00 USD
    $656.00 USD
    $590.00 USD
    $590.00 USD - $590.00 USD
    $590.00 USD

    William Optics Flattener 68III

    WO-P-FLAT68III

    Designed specifically for William Optics 68mm f/6 refractor telescopes Corrects field curvature for improved edge-to-edge sharpness De...

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    $656.00 USD
    $656.00 USD - $656.00 USD
    $656.00 USD
    $590.00 USD
    $590.00 USD - $590.00 USD
    $590.00 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 RedCat Erecting Prism - 1.25" Silver Version

    WO-D-EP90-125-RC51-SL

    1.25" erecting prism for correct image orientation Silver-finished design specifically for RedCat telescopes Description The W...

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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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    $108.00 USD
    $108.00 USD - $108.00 USD
    $108.00 USD
    $97.00 USD
    $97.00 USD - $97.00 USD
    $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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    $108.00 USD
    $108.00 USD - $108.00 USD
    $108.00 USD
    $97.00 USD
    $97.00 USD - $97.00 USD
    $97.00 USD
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    $399.00 USD
    $399.00 USD - $399.00 USD
    $399.00 USD
    $359.00 USD
    $359.00 USD - $359.00 USD
    $359.00 USD

    William Optics STC Astro Duo-Narrowband Filter

    WO-YF-STC-ADN

    Dual-bandpass filter for astrophotography Optimized for H-alpha and OIII emission lines Description The William Optics STC Ast...

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    $399.00 USD
    $399.00 USD - $399.00 USD
    $399.00 USD
    $359.00 USD
    $359.00 USD - $359.00 USD
    $359.00 USD
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