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List of products by brand William Optics

This manufacturer hails from Taiwan and was established in 2000, focusing on refractors and astronomical accessories. William Optics is celebrated for its aesthetically pleasing designs, producing telescopes and accessories that combine performance and elegance, appealing to amateur astronomers.

Showing 1-16 of 16 item(s)

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Corrective Optics

William Optics FLAT 73A Flattener

New, dedicated 2" flattener by William Optics optimized for use with their Z73 full-frame APO telescope. True 1:1 flattener with no reduction. You can use your Canon or Nikon DSLR directly with the use of an optional M48 camera-specific T-ring (sold separately).

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New

Refractor

William Optics Pleiades 111 Astrograph - 111mm F4.8 7-element APO Refractor - Blue

7 Optical elements FPL-53 glass and 3 Super ED lenses 111mm aperture 530mm focal length F4.8 focal ratio

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New

Refractor

William Optics Pleiades 181 Astrograph - 181mm F5.5 7-element APO Refractor - Blue

7 Optical elements FPL-53 glass and 3 Super ED lenses 181mm aperture 998mm focal length F5.5 focal ratio Blue version

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New

Refractor

William Optics Pleiades 181 Astrograph - 181mm F5.5 7-element APO Refractor - Red

7 Optical elements FPL-53 glass and 3 Super ED lenses 181mm aperture 998mm focal length F5.5 focal ratio Red version

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New

Refractor

William Optics Pleiades 68 Astrograph - 68mm F3.8 7-element APO Refractor - Blue

7 Optical elements FPL-53 glass and 3 Super ED lenses 68mm aperture 260mm focal length F3.8 focal ratio

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New

Refractor

William Optics RedCat 51 WIFD - 51mm F4.9 Petzval Refractor Telescope

Newest version (gen III) of the best-selling William Optics RedCat 51 4-element Petzval refractor telescope 250mm focal length, f/4.9 focal ratio Premium quality FPL-53 glass Brand new WIFD focuser design Soft case, dovetail bar, tube rings, and saddle included

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New

Refractor

William Optics RedCat 61 WIFD - 61mm F4.9 Petzval Refractor Telescope

4-element Petzval refractor telescope 300mm focal length, f/4.9 focal ratio Premium quality FPL-53 glass Brand new WIFD focuser design Soft case, dovetail bar, tube rings, and saddle included

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New

Refractor

William Optics RedCat 71 WIFD - 71mm F4.9 Petzval Refractor Telescope

Newest version (gen III) of the best-selling William Optics RedCat71 4-element Petzval refractor telescope 350mm focal length, f/4.9 focal ratio Premium quality FPL-53 glass for color free apochromatic performance Brand new WIFD focuser design M48, M54, and M68 male threads for attachment to cameras and accessories Seamless integration with ZWO EAF Soft...

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New

Refractor

William Optics RedCat 91 WIFD - 91mm F4.9 Petzval Refractor Telescope

4-element Petzval refractor telescope 448mm focal length, f/4.9 focal ratio Premium quality FPL-53 glass for color free apochromatic performance Brand new WIFD focuser design M48, M54, and M68 male threads for attachment to cameras and accessories Seamless integration with ZWO EAF Soft case, dovetail bar, tube rings, and saddle included

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New

Refractor

William Optics Zenithstar 61 II APO - 61mm F5.9 Doublet Refracting Telescope - Gold

61 mm (2.41-inch) Aperture. f/5.9 Focal Ratio. 3.2 lb - Travel Telescope for Astrophotography and Wildlife Photography. Adaptable with any DSLR. This is the Grey Version Innovative Bahtinov Mask Cover for Easy Focus Assist. Soft Carry Case Included!

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New

Refractor

William Optics Zenithstar 61 II APO - 61mm F5.9 Doublet Refracting Telescope - Red

61 mm (2.41-inch) Aperture. f/5.9 Focal Ratio. 3.2 lb - Travel Telescope for Astrophotography and Wildlife Photography. Adaptable with any DSLR. This is the Red Version Innovative Bahtinov Mask Cover for Easy Focus Assist. Soft Carry Case Included!

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New

Refractor

William Optics Zenithstar 61 II APO - 61mm F5.9 Doublet Refracting Telescope - Space Grey

61 mm (2.41-inch) Aperture. f/5.9 Focal Ratio. 3.2 lb - Travel Telescope for Astrophotography and Wildlife Photography. Adaptable with any DSLR. This is the Gold Version Innovative Bahtinov Mask Cover for Easy Focus Assist. Soft Carry Case Included!

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New

Refractor

William Optics Zenithstar 73 III APO - 73mm F5.9 Doublet Apo Refractor - Gold

William Optics Z73 f/5.9 Refractor uses FPL-53 glass for sharp views. Built-in Bahtinov Mask ensures you have perfect focus. V-Style dovetail bar included. V-Style dovetail plate/handle included. 2.5" Rack & Pinion focuser. Includes a telescope carrying case. Gold version.

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New

Refractor

William Optics Zenithstar 73 III APO - 73mm F5.9 Doublet Apo Refractor - Red

William Optics Z73 f/5.9 Refractor uses FPL-53 glass for sharp views. Built-in Bahtinov Mask ensures you have perfect focus. V-Style dovetail bar included. V-Style dovetail plate/handle included. 2.5" Rack & Pinion focuser. Includes a telescope carrying case. Red version.

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New

Refractor

William Optics Zenithstar 81 WIFD - 81mm F6.9 Doublet Apo Refractor - Gold

WO_T-ZS-81GD-WIFD

2 Optical elements 2 FPL-53 glass lenses 81mm aperture 559mm focal length F6.9 focal ratio Gold version

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New

Refractor

William Optics Zenithstar 81 WIFD - 81mm F6.9 Doublet Apo Refractor - Red

WO_T-ZS-81RD-WIFD

2 Optical elements 2 FPL-53 glass lenses 81mm aperture 559mm focal length F6.9 focal ratio Red version

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