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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!

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William Optics

  • Original price $64.00 USD
    Original price $64.00 USD - Original price $64.00 USD
    Original price $64.00 USD
    Current price $58.00 USD
    $58.00 USD - $58.00 USD
    Current price $58.00 USD

    William Optics Slide-Base 50mm Guiding Rings - No Adjustments Screws

    WO-M-GR50IISL

    Seamlessly integrate with your existing astrophotography gear. Ensures stable attachment of your telescope to your mount. Description In th...

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    Original price $64.00 USD
    Original price $64.00 USD - Original price $64.00 USD
    Original price $64.00 USD
    Current price $58.00 USD
    $58.00 USD - $58.00 USD
    Current price $58.00 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 $171.00 USD
    Original price $171.00 USD - Original price $171.00 USD
    Original price $171.00 USD
    Current price $154.00 USD
    $154.00 USD - $154.00 USD
    Current price $154.00 USD

    William Optics Slide-Base UniGuide 50mm Scope

    Options available
    2 variants in stock

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

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    Original price $171.00 USD
    Original price $171.00 USD - Original price $171.00 USD
    Original price $171.00 USD
    Current price $154.00 USD
    $154.00 USD - $154.00 USD
    Current price $154.00 USD
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  • Original price $59.00 USD
    Original price $59.00 USD - Original price $59.00 USD
    Original price $59.00 USD
    Current price $53.00 USD
    $53.00 USD - $53.00 USD
    Current price $53.00 USD

    William Optics Soft Carry Case for Z71 / Z73 / Star71 / GT71

    WO-BG1-P004

    Soft carry case designed specifically for William Optics Z71, Z73, Star71, and GT71 telescopes Offers protection an...

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    Original price $59.00 USD
    Original price $59.00 USD - Original price $59.00 USD
    Original price $59.00 USD
    Current price $53.00 USD
    $53.00 USD - $53.00 USD
    Current price $53.00 USD
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  • Original price $49.00 USD
    Original price $49.00 USD - Original price $49.00 USD
    Original price $49.00 USD
    Current price $44.00 USD
    $44.00 USD - $44.00 USD
    Current price $44.00 USD

    William Optics Soft Carry Case for Zenithstar 61 Telescope

    WO-BG1-P006-A01BL01

    Soft carry case designed specifically for the William Optics Zenithstar 61 telescope Offers protection and convenience for transporting your...

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    Original price $49.00 USD
    Original price $49.00 USD - Original price $49.00 USD
    Original price $49.00 USD
    Current price $44.00 USD
    $44.00 USD - $44.00 USD
    Current price $44.00 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 $399.00 USD
    Original price $399.00 USD - Original price $399.00 USD
    Original price $399.00 USD
    Current price $359.00 USD
    $359.00 USD - $359.00 USD
    Current price $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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    Original price $399.00 USD
    Original price $399.00 USD - Original price $399.00 USD
    Original price $399.00 USD
    Current price $359.00 USD
    $359.00 USD - $359.00 USD
    Current price $359.00 USD
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  • Original price $198.00 USD
    Original price $198.00 USD - Original price $198.00 USD
    Original price $198.00 USD
    Current price $178.00 USD
    $178.00 USD - $178.00 USD
    Current price $178.00 USD

    William Optics STC Ultra Layer Astro Multispectra Filter - 48mm

    WO-YF-STC-M48

    Multi-bandpass filter for astrophotography 48mm thread-on design for easy attachment Description The William Optics STC Ultra ...

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    Original price $198.00 USD
    Original price $198.00 USD - Original price $198.00 USD
    Original price $198.00 USD
    Current price $178.00 USD
    $178.00 USD - $178.00 USD
    Current price $178.00 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 $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 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 $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 $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 SWAN 72° 9mm Eyepiece - 1.25"

    WO-E-SWA09

    1.25-inch eyepiece with 72° apparent field of view 9mm focal length for high-magnification, wide-field viewing Description The...

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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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  • Original price $3,598.00 USD
    Original price $3,598.00 USD - Original price $3,598.00 USD
    Original price $3,598.00 USD
    Current price $3,418.00 USD
    $3,418.00 USD - $3,418.00 USD
    Current price $3,418.00 USD

    William Optics UltraCat 108 f/4.8 WIFD

    WO-T-C-108BR

    Original price $3,598.00 USD
    Original price $3,598.00 USD - Original price $3,598.00 USD
    Original price $3,598.00 USD
    Current price $3,418.00 USD
    $3,418.00 USD - $3,418.00 USD
    Current price $3,418.00 USD
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  • Original price $64.00 USD
    Original price $64.00 USD - Original price $64.00 USD
    Original price $64.00 USD
    Current price $58.00 USD
    $58.00 USD - $58.00 USD
    Current price $58.00 USD

    William Optics Vixen Style Finder Mounting Bracket

    WO-M-FB50-B
    2 in stock

    Seamlessly integrate with your existing astrophotography gear. Ensures stable attachment of your telescope to your mount. Description In th...

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    Original price $64.00 USD
    Original price $64.00 USD - Original price $64.00 USD
    Original price $64.00 USD
    Current price $58.00 USD
    $58.00 USD - $58.00 USD
    Current price $58.00 USD
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  • Original price $80.00 USD
    Original price $80.00 USD - Original price $80.00 USD
    Original price $80.00 USD
    Current price $72.00 USD
    $72.00 USD - $72.00 USD
    Current price $72.00 USD

    William Optics Vixen Style Finder Mounting Bracket for RedCat - Black Base

    WO-M-FB50-RC-BB

    Seamlessly integrate with your existing astrophotography gear. Ensures stable attachment of your telescope to your mount. Description In th...

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    Original price $80.00 USD
    Original price $80.00 USD - Original price $80.00 USD
    Original price $80.00 USD
    Current price $72.00 USD
    $72.00 USD - $72.00 USD
    Current price $72.00 USD
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  • Original price $22.00 USD
    Original price $22.00 USD - Original price $22.00 USD
    Original price $22.00 USD
    Current price $20.00 USD
    $20.00 USD - $20.00 USD
    Current price $20.00 USD

    William Optics Vixen Style Mounting Base

    WO-BAFM-ST001

    Work with Vixen-style dovetail bars Made of durable materials Description The William Optics Vixen Style Mounting Base is an accessor...

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    Original price $22.00 USD
    Original price $22.00 USD - Original price $22.00 USD
    Original price $22.00 USD
    Current price $20.00 USD
    $20.00 USD - $20.00 USD
    Current price $20.00 USD
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  • Original price $39.00 USD
    Original price $39.00 USD - Original price $39.00 USD
    Original price $39.00 USD
    Current price $35.00 USD
    $35.00 USD - $35.00 USD
    Current price $35.00 USD

    William Optics Vixen-Style 8" Dovetail Plate - Black

    WO-M-PVB

    Designed to fit Vixen-style dovetail mounts Ensures durability and a lightweight design. Description The William Optics Vixen-...

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    Original price $39.00 USD
    Original price $39.00 USD - Original price $39.00 USD
    Original price $39.00 USD
    Current price $35.00 USD
    $35.00 USD - $35.00 USD
    Current price $35.00 USD
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  • Original price $39.00 USD
    Original price $39.00 USD - Original price $39.00 USD
    Original price $39.00 USD
    Current price $35.00 USD
    $35.00 USD - $35.00 USD
    Current price $35.00 USD

    William Optics Vixen-Style 8" Dovetail Plate - Red

    WO-M-PVR

    Designed to fit Vixen-style dovetail mounts Ensures durability and a lightweight design. Description The William Optics Vixen-...

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    Original price $39.00 USD
    Original price $39.00 USD - Original price $39.00 USD
    Original price $39.00 USD
    Current price $35.00 USD
    $35.00 USD - $35.00 USD
    Current price $35.00 USD
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  • Original price $806.00 USD
    Original price $806.00 USD - Original price $806.00 USD
    Original price $806.00 USD
    Current price $725.00 USD
    $725.00 USD - $725.00 USD
    Current price $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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    Original price $806.00 USD
    Original price $806.00 USD - Original price $806.00 USD
    Original price $806.00 USD
    Current price $725.00 USD
    $725.00 USD - $725.00 USD
    Current price $725.00 USD
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  • Original price $691.00 USD
    Original price $691.00 USD - Original price $691.00 USD
    Original price $691.00 USD
    Current price $622.00 USD
    $622.00 USD - $622.00 USD
    Current price $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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    Original price $691.00 USD
    Original price $691.00 USD - Original price $691.00 USD
    Original price $691.00 USD
    Current price $622.00 USD
    $622.00 USD - $622.00 USD
    Current price $622.00 USD
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  • Original price $599.00 USD
    Original price $599.00 USD - Original price $599.00 USD
    Original price $599.00 USD
    Current price $569.00 USD
    $569.00 USD - $569.00 USD
    Current price $569.00 USD

    William Optics Zenithstar 61II APO

    Options available

    61mm APO using FPL-53 Glass F/5.9 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your passion for ast...

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    Original price $599.00 USD
    Original price $599.00 USD - Original price $599.00 USD
    Original price $599.00 USD
    Current price $569.00 USD
    $569.00 USD - $569.00 USD
    Current price $569.00 USD
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  • Original price $730.00 USD
    Original price $730.00 USD - Original price $730.00 USD
    Original price $730.00 USD
    Current price $694.00 USD
    $694.00 USD - $694.00 USD
    Current price $694.00 USD

    William Optics Zenithstar 73 III APO

    Options available

    73mm APO using FPL-53 Glass F/5.9 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your passion for ast...

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    Original price $730.00 USD
    Original price $730.00 USD - Original price $730.00 USD
    Original price $730.00 USD
    Current price $694.00 USD
    $694.00 USD - $694.00 USD
    Current price $694.00 USD
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  • Original price $888.00 USD
    Original price $888.00 USD - Original price $888.00 USD
    Original price $888.00 USD
    Current price $844.00 USD
    $844.00 USD - $844.00 USD
    Current price $844.00 USD

    William Optics Zenithstar 81 APO

    Options available
    1 variants in stock

    81mm APO using FPL-53 Glass F/6.9 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your pa...

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    Original price $888.00 USD
    Original price $888.00 USD - Original price $888.00 USD
    Original price $888.00 USD
    Current price $844.00 USD
    $844.00 USD - $844.00 USD
    Current price $844.00 USD
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