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William Optics Telescopes

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  • William Optics William Optics ZenithStar 61 mm f/5.9 APO Doublet Refractor Telescope - Red Edition - A-Z61RD
    $478.00
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  • William Optics William Optics ZenithStar 61 mm f/5.9 APO Doublet Refractor Telescope - Gold Edition - A-Z61GD
    $478.00
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  • William Optics 2017 Vixen-Style Dovetail Plate - Standard Gray
    William Optics William Optics 7.9" Vixen-Style Gray Dovetail Plate - M-PVHAII
    $48.00
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  • William Optics Blue 2
    William Optics William Optics 2" to 1.25" RotoLock Adapter - Blue - F-ROTO-A2-125BU
    $45.00
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  • William Optics 2
    William Optics William Optics 2" to 1.25" RotoLock Adapter - Red - F-ROTO-A2-125RD
    $45.00
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  • William Optics Nikon 42 mm T-Mount Ring Adapter
    William Optics William Optics M42 Nikon T-Ring - YE-TR-CE-N
    $10.00
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  • William Optics Blue Flat4 Draw Tube Adapter for 3
    William Optics William Optics Flat4 Draw Tube Adapter for 3" V-Power Focuser Only - Blue Version - AD4-A006-L00BU03
    $58.00
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  • William Optics Black Flat4 Draw Tube Adapter for 3
    William Optics William Optics Flat4 Draw Tube Adapter for 3" V-Power Focuser Only - Black Version - AD4-A006-L00BL03
    $58.00
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  • William Optics William Optics Soft Carry Case for ZenithStar 61 Telescope - BG1-P006-A01BL01
    $49.00
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  • William Optics 2.5
    William Optics William Optics 2.5" M63 Photo Adapter for Z73, Z103, and GT81 - P-PAM63-48
    $58.00
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  • William Optics 48mm (Female) to 42mm (Male) Thread Adapter
    William Optics William Optics 48mm (Female) to 42mm (Male) Thread Adapter - YE-M48-42
    $10.00
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  • William Optics 50mm Guiding Scope in Red (Unique 1.25
    William Optics William Optics 50mm Guiding Scope with 1.25" RotoLock - Red - M-G50RII
    $139.00
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  • William Optics William Optics Fluorostar 132mm f/7 Triplet APO Refractor with 3" V-Power Focuser & Roto Lock Adapter- Gold - A-F132-VP20ARII-GD
    $3,698.00
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  • William Optics 6x30 Erecting Illuminated Finder Scope
    William Optics William Optics 6x30 Erecting Illuminated Finder Scope - Black - M-F6X30-B
    $68.00
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  • William Optics William Optics Universal Smartphone Telescope Adapter - CLA20
    $99.00
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  • William Optics William Optics Adjustable Flat61 for Z61 - P-FLAT61A
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  • William Optics William Optics 1.25” 90° Erect Prism Diagonal - D-EP90-125-II
    $83.00
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  • William Optics William Optics Gran Turismo 102 Triplet Refractor w/ Bahtinov Mask Cover - Gold - A-F102GTS-RP33
    $1,998.00
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  • William Optics William Optics High Precision "Copper" T-Mount for Canon EOS Full Frame Cameras - YE-TR-BR48-C
    $68.00
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  • William Optics William Optics WhiteCat 51 Refractor Telescope - A-RC51-GD
    $698.00
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  • William Optics William Optics Extension Bar for iOptron SkyGuider Pro - M-IO-EB20RD
    $29.00
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  • William Optics William Optics 8" Vixen-Style Red Dovetail Plate - M-PVR
    $39.00
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  • William Optics William Optics High Precision Copper T-Mount for Nikon Cameras - YE-TR-BR48-N
    $68.00
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  • William Optics William Optics STC Ultra Layer Astro Multispectra Filter - 48mm - YF-STC-M48
    $198.00
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  • William Optics William Optics STC Astro Duo-Narrowband Filter - 48mm - YF-STC-ADN
    $399.00
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  • William Optics William Optics Fluorostar 132 Refractor w/ 3.3 Rack & Pinion Focsuer - Gold - A-F132GD-RP33II
    $3,598.00
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  • William Optics William Optics 132 mm FLT f/7 APO Triplet Refractor with 3.5" FT Focuser and Roto Lock Adapter - Gold - A-F132-FTRII-GD
    $4,598.00
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  • William Optics 68III Field Flattener
    William Optics William Optics Flattener 68III - P-FLAT68III
    $598.00
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  • William Optics 0.72x Reducer/Flattener
    William Optics William Optics 0.72x Reducer/Flattener 8 - P-FLAT8
    $698.00
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  • William Optics William Optics Flattener 7 for Gran Turismo 102 APO Refractor - P-FLAT7-GT102
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  • William Optics Gran Turismo 153 Triplet APO Refractor
    William Optics William Optics Gran Turismo 153 Triplet APO Refractor - A-F153GT-FT
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  • William Optics William Optics Flattener 7 for Fluorostar 132 - P-FLAT7-F132
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  • William Optics William Optics ZenithStar 81 APO Doublet Refractor - A-Z81
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  • William Optics William Optics T Mount for Sony E - YE-TR-M48ET
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  • William Optics William Optics Zenithstar 103 Imaging APO Refractor with Bahtinov Mask Cover - A-Z103
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  • William Optics William Optics Carry Case for 800mm or 1000mm Tri-Pier - BG2-TP
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  • William Optics William Optics Vixen Style Mounting Bracket for RedCat & WhiteCat - M-FB50-RC
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  • William Optics William Optics 800mm or 1000mm Mortar Tri-Pier - YG-MT
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  • William Optics William Optics Gran Turismo 81 Triplet APO Refractor w/ Dual Dovetail - A-F81GTIII
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  • William Optics William Optics High or Low Latitude Vixen Style Base Mount - YG-IO-SGSW01
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William Optics provides quality refractors, mounts, and accessories such as eyepieces, diagonals, and mounting hardware for amateur astronomers around the world. The CEO of the company is David Yang, an avid amateur astronomer and bird-watcher who feels strongly about offering premium optics to everyone with an interest in astronomy or nature, and not just to those with plenty of cash to spare.

When William Yang was a child, he thumbed through the pages of Sky & Telescope magazine and gazed at the beautiful images of our universe laid before him. His family could not afford to buy him a telescope, but he could dream of a day when he would be able to photograph galaxies and nebulae like the astrophotographers he admired so much. In 1986, David saved up all summer to buy a telescope to watch Halley's Comet, but before that he tried his hand at building his own telescopes with whatever supplies he could find; he even "borrowed" his grandmother's eyeglasses to use as the lenses for his first refractor!

In 1996, David opened William Optics in Taiwan. Four years later, in 2000, William Optics USA began by offering their break-out 80mm Megrez refractor to consumers in the United States. The quality, as well as the price, was amazing, and before long, William Optics had positioned themselves as one of the world leaders in fast, highly portable quality refractors.

William Optics also makes some great telescope accessories. Their WO Diagonals are celebrated the world over for their machining and optical quality, and their Ultra Wide Angle (UWA) and Super Wide Angle (SWA) eyepieces, with their unusual jet-black insertion barrels, have come to be known for their quality, but at an affordable price. We think William Yang has achieved what he set out to do; providing "More Quality for Less Money"; and we look forward to what he plans to do next!

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