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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
William Optics

William Optics

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$17,998.00 - $17,998.00
$17,998.00
$17,998.00 - $17,998.00
$17,998.00

William Optics Pleiades 181 Astrograph F/5.5 7-element with 3 ED glasses

WO-T-P-181RD

7-Element APO with 3 ED Glasses Refractor Design F/5.5 Fast Focal Ratio Portable and Versatile Description Specifications In the Box ...

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$17,998.00 - $17,998.00
$17,998.00
$17,998.00 - $17,998.00
$17,998.00
$7,398.00 - $7,398.00
$7,398.00
$7,398.00 - $7,398.00
$7,398.00

William Optics Fluorostar 156

Options available

156mm APO F/6.7 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your passion for astrophotography with...

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$7,398.00 - $7,398.00
$7,398.00
$7,398.00 - $7,398.00
$7,398.00
$4,378.00 - $5,668.00
$4,378.00 - $5,668.00
$4,378.00 - $5,668.00
$4,378.00

William Optics Fluorostar 132

Options available

132mm APO F/6.9 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your passion for astrophotography with...

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$4,378.00 - $5,668.00
$4,378.00 - $5,668.00
$4,378.00 - $5,668.00
$4,378.00
$3,798.00 - $3,798.00
$3,798.00
$3,798.00 - $3,798.00
$3,798.00

William Optics Pleiades 111 Astrograph F/4.8 7-element WIFD

WO-T-P-111BU

7-Element APO Refractor Design F/4.8 Fast Focal Ratio Wide Image Field Design (WIFD) Portable and Versatile Description Specifications I...

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$3,798.00 - $3,798.00
$3,798.00
$3,798.00 - $3,798.00
$3,798.00
$3,598.00 - $3,598.00
$3,598.00
$3,598.00 - $3,598.00
$3,598.00

William Optics UltraCat 108 f/4.8 WIFD

WO-T-C-108BR
1 in stock

$3,598.00 - $3,598.00
$3,598.00
$3,598.00 - $3,598.00
$3,598.00
$3,298.00 - $3,298.00
$3,298.00
$3,298.00 - $3,298.00
$3,298.00

William Optics Fluorostar 120

Options available

120mm APO F/6 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your passion for astrophotography with t...

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$3,298.00 - $3,298.00
$3,298.00
$3,298.00 - $3,298.00
$3,298.00
$2,598.00 - $2,598.00
$2,598.00
$2,598.00 - $2,598.00
$2,598.00

William Optics Cat 91 WIFD

Options available
1 variants in stock

Petzval Design, No Backfocus Hassles Full-Frame & Medium-Format Ready, No Extra Flattener Needed Fast f/4.9 Focal Ratio Seamle...

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$2,598.00 - $2,598.00
$2,598.00
$2,598.00 - $2,598.00
$2,598.00
$1,998.00 - $1,998.00
$1,998.00
$1,998.00 - $1,998.00
$1,998.00

William Optics Pleiades 68 Astrograph F/3.8 7-Element WIFD

WO-T-P-68BU

7-Element APO Refractor Design F/3.8 Fast Focal Ratio WO Internal Focuser Design (WIFD) Portable and Versatile Description Specifications In th...

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$1,998.00 - $1,998.00
$1,998.00
$1,998.00 - $1,998.00
$1,998.00
$1,998.00 - $1,998.00
$1,998.00
$1,998.00 - $1,998.00
$1,998.00

William Optics Gran Turismo WIFD 81

Options available

81mm APO F/5.9 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your passion for astrophotography with ...

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$1,998.00 - $1,998.00
$1,998.00
$1,998.00 - $1,998.00
$1,998.00
$1,998.00 - $1,998.00
$1,998.00
$1,998.00 - $1,998.00
$1,998.00

William Optics Fluorostar 91

Options available

91mm APO using FPL-53 Glass F/5.9 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Take your astrophotography t...

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$1,998.00 - $1,998.00
$1,998.00
$1,998.00 - $1,998.00
$1,998.00
$1,888.00 - $1,888.00
$1,888.00
$1,888.00 - $1,888.00
$1,888.00

William Optics UltraCat 76 f/4.8 WIFD

WO-T-C-76BR
2 in stock

$1,888.00 - $1,888.00
$1,888.00
$1,888.00 - $1,888.00
$1,888.00
$1,398.00 - $1,398.00
$1,398.00
$1,398.00 - $1,398.00
$1,398.00

William Optics Redcat 71 WIFD

WO-T-C-71RDII
3 in stock

71mm APO F/4.9 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your passion for astrophotography with ...

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$1,398.00 - $1,398.00
$1,398.00
$1,398.00 - $1,398.00
$1,398.00
$1,398.00 - $1,398.00
$1,398.00
$1,398.00 - $1,398.00
$1,398.00

William Optics UltraCat 56 f/4.8 WIFD

WO-T-C-56BR
2 in stock

$1,398.00 - $1,398.00
$1,398.00
$1,398.00 - $1,398.00
$1,398.00
$1,098.00 - $1,098.00
$1,098.00
$1,098.00 - $1,098.00
$1,098.00

William Optics RedCat 61 WIFD

WO-L-RC61
3 in stock

51mm 4-elements Petzval refractor 300mm focal length - f/4.9 focal ratio 46mm image circle - No field flattener required WIFD focuser design ...

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$1,098.00 - $1,098.00
$1,098.00
$1,098.00 - $1,098.00
$1,098.00
$933.00 - $933.00
$933.00
$933.00 - $933.00
$933.00

William Optics Gran Turismo 71 APO Triplet

WO-A-F71GTII-RD

71mm APO Triplet F/5.9 Fast Focal Ratio Portable and Versatile Description Specifications In the Box Unleash your passion for astrophotograp...

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$933.00 - $933.00
$933.00
$933.00 - $933.00
$933.00
$898.00 - $898.00
$898.00
$898.00 - $898.00
$898.00

William Optics MiniCat 51 WIFD f/3.5

WO-T-C-MINI-RD
5 in stock

The MiniCat51 is a versatile and powerful option for astrophotography enthusiasts, offering superior optics in a sleek, portable design. Its WIFD ...

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$898.00 - $898.00
$898.00
$898.00 - $898.00
$898.00
$888.00 - $888.00
$888.00
$888.00 - $888.00
$888.00

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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$888.00 - $888.00
$888.00
$888.00 - $888.00
$888.00
$806.00 - $806.00
$806.00
$806.00 - $806.00
$806.00

William Optics RC Focuser w/ Optional 0.8x RC Reducer Flattener

Options available

Provides precise focusing for Ritchey-Chrétien telescopes Includes an optional 0.8x reducer flattener for improved image quality Description...

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$806.00 - $806.00
$806.00
$806.00 - $806.00
$806.00
$806.00 - $806.00
$806.00
$806.00 - $806.00
$806.00

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 - $806.00
$806.00
$806.00 - $806.00
$806.00
$798.00 - $798.00
$798.00
$798.00 - $798.00
$798.00

William Optics Redcat 51 WIFD

WO-L-RC51RDIII
1 in stock

51mm 4-elements Petzval refractor 250mm focal length - f/4.9 focal ratio 48mm image circle - No field flattener required! WIFD focuser design D...

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$798.00 - $798.00
$798.00
$798.00 - $798.00
$798.00
$798.00 - $798.00
$798.00
$798.00 - $798.00
$798.00

William Optics Pier Mount 90

WO-YG-PM-90R+YG-38-PM90AD-BL

Comes with 3/8" head for ZWO mounts Weight: approx. 7 kg Loading Capacity:90 kg / 198 lbs HeightStance: 89.3 cm Closed: 79.3 cm Foot Adjustable Hei...

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$798.00 - $798.00
$798.00
$798.00 - $798.00
$798.00
Sold out
$761.00 - $761.00
$761.00
$761.00 - $761.00
$761.00

William Optics Mortar Tri-Pier w/ Bag - Discontinued

WO-YG-MT1000BR

Pier System designed for telescopes and instruments Offers high stability and adjustability Description In the Box Warranty The...

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$761.00 - $761.00
$761.00
$761.00 - $761.00
$761.00
Sold out
$730.00 - $730.00
$730.00
$730.00 - $730.00
$730.00

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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$730.00 - $730.00
$730.00
$730.00 - $730.00
$730.00
$691.00 - $691.00
$691.00
$691.00 - $691.00
$691.00

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 - $691.00
$691.00
$691.00 - $691.00
$691.00