William Optics Telescopes & Accessories
William Optics makes quality refractor telescopes and equipment for all skill levels. Learn more about William Optics, or read our William Optics Telescopes Buying Guide.
- William Optics New FLT 132 Fluorostar 132mm f/6.9 Triplet Apo Refractor with Carry Case - Re...Our Price: $4,378.00In StockFree Contiguous US Shipping
- William Optics GuideStar61 61mm f/5.9 Doublet Apo Refractor / Guidescope with Soft Case - Re...Our Price: $438.00Out of StockFree US Shipping
- William Optics Field Flattener GS61A for GS61 GuidescopeOur Price: $195.00Out of StockFree US Shipping
- William Optics GuideStar61 61mm f/5.9 Doublet Apo Refractor / Guidescope with Field Flattene...Our Price: $633.00Out of StockFree US Shipping
- William Optics GuideStar61 61mm f/5.9 Doublet Apo Refractor / Guidescope with Field Flattene...Our Price: $633.00Out of StockFree US Shipping
- William Optics FLT 91 Fluorostar 91mm f/5.9 Triplet Apo Refractor with Carry Case - Space Gr...Our Price: $1,998.00In StockFree Contiguous US Shipping
- William Optics FLT 91 Fluorostar 91mm f/5.9 Triplet Apo Refractor with Carry Case - Gold # T...Our Price: $1,998.00In StockFree Contiguous US Shipping
- William Optics Camera Angle Adjuster / Rotator with M54 Threads # M-CAA54Our Price: $104.00In StockFree US Shipping
- DiscontinuedWilliam Optics Mortar Tri-Pier for Select Mounts # PAMT-WO-YG-MTOur Price: $740.00Out of StockFree Contiguous US Shipping
- William Optics Diffraction Spikes Bahtinov Focusing Mask - For Telescope Tube/Dewshield Diam...Our Price: $90.00In StockFree US Shipping
- William Optics Adapter Plate for Mortar Tri-Pier - 3/8" Thread # YG-38-MTAD-BLOur Price: $109.99Out of StockFree Contiguous US Shipping
- William Optics Bahtinov Focusing Mask Cap for Z61 Telescopes Only - Red # CPBM-61RDOur Price: $90.00Out of StockFree US Shipping
- SpecialWilliam Optics RedCat 61 WIFD f/4.9 Petzval Refractor TelescopeOur Price: $1,598.00In StockFree Contiguous US Shipping
- William Optics Cellphone Holder Telescope Adapter # WO-CLA20Our Price: $109.00In StockFree US Shipping
- William Optics Camera Angle Adjuster / Rotator with M92 Thread # M-CAA92Our Price: $169.00In StockFree US Shipping
- William Optics 48mm Wide T-Ring for Pentax K-Mount Cameras - Black # TM-PT-K-M48Our Price: $34.00In StockFree US Shipping
- William Optics New FLT 132 Fluorostar 132mm f/6.9 Triplet Apo Refractor with Carry Case - Go...Our Price: $4,378.00In StockFree Contiguous US Shipping
- William Optics ~4" Diameter Extension Tube with 2.6" Extension for FLT Series Refractors # P...Our Price: $64.00In StockFree US Shipping
- William Optics GuideStar61 61mm f/5.9 Doublet Apo Refractor / Guidescope with Soft Case - Go...Our Price: $438.00Out of StockFree US Shipping
- William Optics Soft Carry Case for FLT98 / GT102 / GTF102 / Z103 / FLT110 TelescopesOur Price: $185.00Out of StockFree US Shipping
- William Optics 50mm Slide-Base Clamping Guiding Rings - Gold # GR50IIGDOur Price: $64.00Out of StockFree US Shipping
- William Optics M80-to-M54 Adapter for Flat68III or Flat 7A # AD-M80TOM54Our Price: $49.00In StockFree US Shipping
- William Optics GuideStar61 61mm f/5.9 Doublet Apo Refractor / Guidescope with Soft Case - Bl...Our Price: $438.00Out of StockFree US Shipping
- William Optics Dual-Sided Vixen/Arca Swiss 245mm (9.6") Dovetail Plate - Black # M-PRC245BLOur Price: $49.00In StockFree US Shipping
About William Optics Telescopes & Accessories
William Optics is a Taiwanese telescope and accessories company founded in 1996 by amateur astronomer William Yang. His goal was simple: to create affordable, top quality refractor telescopes for everyone.
William has absolutely accomplished his goal, and now has a number of very popular refractor telescope lines. These include entry-level refractors like the Zenithstar series all the way up to top-of-the-line Fluorostar series. Some of William Optics’ most well-known telescopes include:
- William Optics RedCat 51
- William Optics RedCat 71
- William Optics Zenithstar 61
- William Optics Zenithstar 73
- William Optics GT81
- plus many more
The telescopes William and his team produce are especially popular for widefield and deep sky astrophotography. Many of these refractors are made with high quality components, glass, and optical performance.
The company also makes a wide variety of accessories for both visual astronomy and astrophotography, including eyepieces, diagonals, t-rings, field flatteners, reducer/flatteners, focusers, rotators, Bahtinov masks, and more. It’s truly hard to go wrong with a telescope or accessory made by William Optics.
The company is sometimes mistakenly called misnomers such as Williams Optics and William Optic, but their true name is William Optics.