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 Camera Angle Adjuster / Rotator with M63 Threads # M-CAA63Our Price: $109.00In StockFree US Shipping
- William Optics 2" Push-In Nosepiece with M63 Female Threads for P-FLAT6AIII FlattenerOur Price: $44.00In StockFree US Shipping
- William Optics M80-to-M48 Adapter to Use Flat68III w/ FLT91 or Flat 7A w/ FLT120 Telescope #...Our Price: $49.00In StockFree US Shipping
- William Optics Camera Angle Adjuster / Rotator with M54 Threads # M-CAA54Our Price: $104.00In StockFree US Shipping
- William Optics Camera Angle Adjuster / Rotator with M92 Thread # M-CAA92Our Price: $169.00In StockFree 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 M80-to-M54 Adapter for Flat68III or Flat 7A # AD-M80TOM54Our Price: $49.00In StockFree US Shipping
- William Optics 3.5" to 2" RotoLock Visual Back Adapter for FLT Series RefractorsFrom Our Price: $194.00Free US Shipping
- William Optics M92-to-M63 Adapter to Use Flat6AIII Flattener/Reducer with FLT91 Telescope # ...Our Price: $79.00In StockFree US Shipping
- William Optics M80 to M48 Adapter to Use Flat68III with WIFD GT81 Telescope # AD-M80-54-M48Our Price: $68.00In StockFree US Shipping
- William Optics M80-to-M68 Adapter for Flat68III or Flat 7A # AD-M80TOM68Our Price: $49.00In StockFree US Shipping
- William Optics M80 to M54 Adapter to Use Flat68III with WIFD GT81 Telescope # AD-M80-54-M54Our Price: $68.00In 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.