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ZWO Seestar S30 Desktop
Holiday Schedule: We’ll be taking a short break from December 24th to December 29th to enjoy the holidays. During this time, the store will be closed, no orders will be shipped, and support will be unavailable. Happy Holidays!
Holiday Schedule: We’ll be taking a short break from December 24th to December 29th to enjoy the holidays. During this time, the store will be closed, no orders will be shipped, and support will be unavailable. Happy Holidays!

Correctors and Reducers

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  • $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
  • Sold out
    $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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  • Sold out
    $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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  • Sold out
    $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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    $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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    $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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    $806.00 USD
    $806.00 USD - $806.00 USD
    $806.00 USD
    $725.00 USD
    $725.00 USD - $725.00 USD
    $725.00 USD

    William Optics WO x0.72 Reducer Flattener 8

    WO-P-FLAT8

    0.72x reducer/flattener for William Optics refractor telescopes Reduces focal length and corrects field curvature for improved astrophotogra...

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    $806.00 USD
    $806.00 USD - $806.00 USD
    $806.00 USD
    $725.00 USD
    $725.00 USD - $725.00 USD
    $725.00 USD
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    $691.00 USD
    $691.00 USD - $691.00 USD
    $691.00 USD
    $622.00 USD
    $622.00 USD - $622.00 USD
    $622.00 USD

    William Optics x0.8 Reducer Flattener 7A

    WO-P-FLAT7A

    0.8x reducer/flattener for William Optics refractor telescopes Reduces focal length while correcting field curvature Description ...

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    $691.00 USD
    $691.00 USD - $691.00 USD
    $691.00 USD
    $622.00 USD
    $622.00 USD - $622.00 USD
    $622.00 USD
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  • $128.00 USD - $128.00 USD
    $128.00 USD
    $128.00 USD - $128.00 USD
    $128.00 USD

    ZWO Atmospheric Dispersion Corrector

    ZWO-ADC
    4 in stock

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

    $128.00 USD - $128.00 USD
    $128.00 USD
    $128.00 USD - $128.00 USD
    $128.00 USD
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    $349.00 USD
    $349.00 USD - $349.00 USD
    $349.00 USD
    $297.00 USD
    $297.00 USD - $297.00 USD
    $297.00 USD

    ZWO FF107/FF130 APO 0.7× Universal Reducer

    ZWO-F107130RE
    2 in stock

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

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    $349.00 USD
    $349.00 USD - $349.00 USD
    $349.00 USD
    $297.00 USD
    $297.00 USD - $297.00 USD
    $297.00 USD
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    $199.00 USD
    $199.00 USD - $199.00 USD
    $199.00 USD
    $169.00 USD
    $169.00 USD - $169.00 USD
    $169.00 USD

    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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    $199.00 USD
    $199.00 USD - $199.00 USD
    $199.00 USD
    $169.00 USD
    $169.00 USD - $169.00 USD
    $169.00 USD
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    $249.00 USD
    $249.00 USD - $249.00 USD
    $249.00 USD
    $212.00 USD
    $212.00 USD - $212.00 USD
    $212.00 USD

    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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    $249.00 USD
    $249.00 USD - $249.00 USD
    $249.00 USD
    $212.00 USD
    $212.00 USD - $212.00 USD
    $212.00 USD
    Save 15% Save %