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William Optics Telescopes

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  • William Optics Long Version Vixen Style Dovetail Plate
    William Optics William Optics Long Version Vixen Style Dovetail Plate - Red - M-PV-LII
    $79.00
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  • William Optics William Optics Adjustable Flat61 for Z61 - P-FLAT61A
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  • William Optics Adjustable Field Flattener for ZenithStar 73
    William Optics William Optics Field Flattener for ZenithStar 73 with Adjustable Backfocus - P-FLAT73A
    $198.00
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  • William Optics William Optics 50mm Erecting Finder Scope - M-F50II
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  • William Optics William Optics DSD 210 - 8.27" Dual Sided Dovetail Plate - M-PRC210
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  • William Optics William Optics DSD 245 - 9.65" Dual Sided Dovetail Plate - M-PRC245
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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 DSD 110 Plate All Three Colors
    William Optics William Optics DSD 110 - 4.33" Dual Sided Dovetail Plate - M-PRC110
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  • William Optics William Optics Vixen Base Mount & Extension Bar for SkyGuider Pro - YG-IO-SGSW01-P
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  • William Optics William Optics Bahtinov Mask Cover for WO Telescopes - CPBM
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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 Adjustable 0.8x Focal Reducer & Field Flattener - 2" - P-FLAT6AIII
    $198.00
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  • William Optics William Optics T Mount for Sony E - YE-TR-M48ET
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  • William Optics William Optics 90 mm Saddle for Vixen-Style Dovetails - M-SP90
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  • William Optics William Optics ZenithStar 81 APO Doublet Refractor - A-Z81
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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 1.25" 90° RedCat & WhiteCat Erecting Prism - D-EP90-125-RC51
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  • William Optics William Optics CatEye 10mm Eyepiece - E-CE10
    $99.00
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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 Vixen Style Mounting Base for RedCat & WhiteCat - BAGM-RC001
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  • William Optics William Optics 48mm T-Mount for Pentax K - YE-TR-M48K
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  • William Optics William Optics 250mm Manfrotto/Arca Swiss Dual Plate - M-PMA250
    $58.00
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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 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 800mm or 1000mm Mortar Tri-Pier - YG-MT
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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 8" Vixen-Style Red Dovetail Plate - M-PVR
    $39.00
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  • William Optics William Optics 243mm Slide Groove Handle w/ 50mm Guiding Rings - M-HC243BL-GR50IISL
    $128.00
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  • William Optics William Optics Slide-Base 50mm Silver Guiding Rings - M-GR50IISL
    $58.00
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  • William Optics William Optics 3.5 mm Extremely Wide Angle 110° Eyepiece - 2"/1.25" - E-XWA035
    $198.00
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  • William Optics William Optics 5 mm Extremely Wide Angle 110° Eyepiece - 2"/1.25" - E-XWA05
    $198.00
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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 48mm Olympus Micro 4/3 T-Mount - YE-TR-M48MFT
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  • William Optics William Optics Bahtinov Mask w/ Diffraction Spikes for 243mm-308mm Telescopes - BM-DS-GR150
    $78.00
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  • William Optics William Optics FSQ106 Bahtinov Mask Cap - CPBM-TH106
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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 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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