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 48mm Wide T-Ring for Canon SLR/DSLR EOS Cameras - Black # TM-CN-EOS-M48Our Price: $34.00Out of StockFree US Shipping
- William Optics 48mm Wide T-Ring for Nikon F-Mount SLR/DSLR Cameras - Black # TM-NK-F-M48Our Price: $34.00In StockFree US Shipping
- William Optics 2" to 1.25" RotoLock Eyepiece Adapter - Red # F-ROTO-A2-125RDIIOur Price: $53.00In StockFree US Shipping
- William Optics 48mm Wide T-Ring for Sony E-Mount Cameras - Black # TM-SN-E-M48Our Price: $45.00In StockFree US Shipping
- William Optics 48mm Wide T-Ring for Canon EOS-R Mirrorless Cameras # TM-CN-EOSR-M48Our Price: $56.00Out of StockFree US Shipping
- William Optics 2" Push-In Nosepiece for William Optics DiagonalsOur Price: $33.00Out of StockFree US Shipping
- William Optics 2" to 1.25" RotoLock Eyepiece Adapter - Gold # F-ROTO-A2-125GDIIOur Price: $53.00In StockFree US Shipping
- William Optics 48mm Wide T-Ring for Nikon Z-Mount Mirrorless Cameras # TM-NK-Z-M48Our Price: $56.00Out of StockFree US Shipping
- William Optics High Precision Copper 48mm Wide T-Ring for Canon EOS Cameras # YE-TR-BR48-COur Price: $90.00In StockFree US Shipping
- William Optics High Precision Copper 48mm Wide T-Ring for Nikon Cameras # YE-TR-BR48-NOur Price: $90.00In StockFree US Shipping
- William Optics 48mm Wide Micro 4/3 T-Ring for Olympus Cameras - Black # TM-MFT-M48Our Price: $45.00In StockFree US Shipping
- William Optics 48mm Wide T-Ring for Fuji X Cameras - Black # TM-FJ-X-M48Our Price: $45.00In 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
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.