The William Optics Gran Turismo 81 Triplet is designed to deliver incredible image quality in a compact package. Sitting at a respectable ratio of f/5.9, this FPL53 triplet is well-balanced in light-gathering power.
This is no ordinary refractor.
The Gran Turismo 81 is a Three Element Designed APO refractor. Using FPL-53 glass this telescope provides excellent aberration correction.
 
2.5" R&P Focuser
The 2.5" R&P Focuser is smooth, stable, and reliable! No image shifting!
 
New Designed Rotator
William Optics designed camera angle rotator. Smooth and stable.
 
CNC Handle Bar
Made by CNC with anodizing. Strong and nice look!
 
Bahtinov Mask
World first built in clear Bahtinov mask!
 
Flattener - Not Included
2019 All New Adjustable Flat 6A III (T-mount not included)
This very elegant 2" reducer/field flattener has been designed to optimize the flat-field imaging performance of William Optics F/6 to F7.5 ratio refactors. WO Flat 6AIII will provide good illumination and flat field across 97% of full frame sized sensors.
 
Superb Finish
William Optics polished anodized finish.
All internal surfaces threaded and blackened to prevent reflections.
 
Easy to Use
Will accept any standard 48mm wide T-ring for your camera. Not compatible with smaller 42mm T rings.
 
Deep Sky Imaging with the Gran Turismo 81 APO
If you are new to deep sky astrophotography but have dabbled in tracked night sky shots including the Milky Way – this is likely the best possible next step for you.