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William Optics

20 Items

William Optics Bahtinov Mask Cover for WO Z61 Telescopes - Gold - CPBM-61GD

SKU: WYO-CPBM-61-GD
  • Focus Masks & Caps Known to Fit: William Optics Z61 Telescopes
$78.00

William Optics Bahtinov Mask Cover for WO Z61 Telescopes - Red - CPBM-61RD

SKU: WYO-CPBM-61-RD
  • Focus Masks & Caps Known to Fit: William Optics Z61 Telescopes
$78.00

William Optics Bahtinov Mask Cover for WO GT71/Z73/Star71II Telescopes - Blue - CPBM-71BU

SKU: WYO-CPBM-71-BU
  • Focus Masks & Caps Known to Fit: William Optics GT71/Z73/Star71II Telescopes
$88.00

William Optics Bahtinov Mask Cover for WO GT71/Z73/Star71II Telescopes - Red - CPBM-71RD

SKU: WYO-CPBM-71-RD
  • Focus Masks & Caps Known to Fit: William Optics GT71/Z73/Star71II Telescopes
$88.00

William Optics Bahtinov Mask Cover for WO GT71/Z73/Star71II Telescopes - Gold - CPBM-71GD

SKU: WYO-CPBM-71-GD
  • Focus Masks & Caps Known to Fit: William Optics GT71/Z73/Star71II Telescopes
$88.00

William Optics Bahtinov Mask Cover for WO GT81 Telescopes - Blue - CPBM-81BU

SKU: WYO-CPBM-81-BU
  • Focus Masks & Caps Known to Fit: William Optics GT81 Telescopes
$98.00

William Optics Bahtinov Mask Cover for WO GT81 Telescopes - Red - CPBM-81RD

SKU: WYO-CPBM-81-RD
  • Focus Masks & Caps Known to Fit: William Optics GT81 Telescopes
$98.00

William Optics Bahtinov Mask Cover for WO GT81 Telescopes - Gold - CPBM-81GD

SKU: WYO-CPBM-81-GD
  • Focus Masks & Caps Known to Fit: William Optics GT81 Telescopes
$98.00

William Optics Bahtinov Mask Cover for WO 102 & 103 Series Telescopes - Blue - CPBM-102BU

SKU: WYO-CPBM-102-BU
  • Focus Masks & Caps Known to Fit: William Optics 102 & 103 Series Telescopes
$118.00

William Optics Bahtinov Mask Cover for WO 102 & 103 Series Telescopes - Red - CPBM-102RD

SKU: WYO-CPBM-102-RD
  • Focus Masks & Caps Known to Fit: William Optics 102 & 103 Series Telescopes
$118.00

William Optics Bahtinov Mask Cover for WO 102 & 103 Series Telescopes - Gold - CPBM-102GD

SKU: WYO-CPBM-102-GD
  • Focus Masks & Caps Known to Fit: William Optics 102 & 103 Series Telescopes
$118.00

William Optics Bahtinov Mask Cover for WO FLT132 Telescopes - Blue - CPBM-132BU

SKU: WYO-CPBM-132-BU
  • Focus Masks & Caps Known to Fit: William Optics FLT132 Telescopes
$178.00

William Optics Bahtinov Mask Cover for WO FLT132 Telescopes - Red - CPBM-132RD

SKU: WYO-CPBM-132-RD
  • Focus Masks & Caps Known to Fit: William Optics FLT132 Telescopes
$178.00

William Optics Bahtinov Mask Cover for WO FLT132 Telescopes - Gold - CPBM-132GD

SKU: WYO-CPBM-132-GD
  • Focus Masks & Caps Known to Fit: William Optics FLT132 Telescopes
$178.00
William Optics Diffraction Spikes Bahtinov Mask with Box

William Optics Diffraction Spikes Bahtinov Mask for 105mm-148mm Dew Shields - BM-DS-GR55

SKU: WYO-BM-DS-GR55
  • Focus Masks & Caps Known to Fit: 105 mm to 148 mm (4.13" to 5.82") Dew Shields
$48.00
William Optics Diffraction Spikes Bahtinov Mask

William Optics Diffraction Spikes Bahtinov Mask for 75mm-110mm Dew Shields - BM-DS-GR45

SKU: WYO-BM-DS-GR45
  • Focus Masks & Caps Known to Fit: 75 mm to 110 mm (2.95" to 4.33") Dew Shields
$43.00
William Optics Diffraction Spikes Bahtinov Mask

William Optics Diffraction Spikes Bahtinov Mask for 172mm-235mm Dew Shields - BM-DS-GR90

SKU: WYO-BM-DS-GR90
  • Focus Masks & Caps Known to Fit: 172 mm to 235 mm (6.77" to 9.25") Dew Shields
$68.00

William Optics Bahtinov Mask Cover for WO Z61 Telescopes - Blue - CPBM-61BU

SKU: WYO-CPBM-61-BU
  • Focus Masks & Caps Known to Fit: William Optics Z61 Telescopes
$78.00

William Optics Bahtinov Mask w/ Diffraction Spikes for 243mm-308mm Telescopes - BM-DS-GR150

SKU: WYO-BM-DS-GR150
  • Focus Masks & Caps Known to Fit: Telescopes w/ Diameter Between 243 mm & 308 mm (9.56" & 12.12")
$78.00

William Optics FSQ106 Bahtinov Mask Cap - CPBM-TH106

SKU: WYO-CPBM-TH106
  • Focus Masks & Caps Known to Fit: William Optics Telescopes
$168.00

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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