William Optics Gran Turismo 81 f/5.9 APO Refractor in Space Gray
This William Optics Gran Turismo 81mm Refractor comes with the essentials to get your next imaging session started! This incredible 81mm refractor beautifully pairs with the included Bahtinov mask cover, dovetail plate and mounting rings, and a high quality carrying bag! With all of the accessories needed for your William Optics refractor telescope, you’ll be ready to image in no time!
With the William Optics Gran Turismo 81mm Refractor, your next imaging session is sure to wow you! With its high-quality FPL-53 extra-low dispersion glass and triplet design, your favorite space objects become crystal clear! This William Optics Gran Turismo 81mm Refractor has a sleek design of white finish with Space Gray trim and CNC made body. When paired with the high quality William Optics Slide-Base 32mm UniGuide Scope (not included), William Optics has you conducting astrophotography in style.
Incredible Optics with the Perfect Accessories!
The endless features this telescope bundle provides is perfect to get you set up for your next imaging session under the stars. The incredible optical designs from William Optics shine within this Gran Turismo 81mm Refractor and the included accessories make your astrophotography experience even better! Take a deeper look into the details of this William Optics Gran Turismo 81mm Refractor.
Remarkable Optics
The impressive optics within this William Optics Gran Turismo 81mm Refractor will blow your mind! With its triplet design and FPL-53 glass, images become crystal clear due to its exceptional color correction. Also, each lens is multi-coated with super-high transmission coating (STM), greatly improving contrast and enhancing detail! The spectacular sharpness seen through this William Optics Gran Turismo 81mm Refractor is sure to take your astrophotography to the next level!
The Perfect Focus
The focuser on the William Optics Gran Turismo 81mm refractor is a 2.5″ Rack & Pinion focuser, allowing you to achieve the perfect focus on your favorite celestial objects. By having a large focus adjustment knob and a smaller more precise adjustment knob, finding focus on the stars is quick and effortless! The included Bahtinov mask cover and this Rack & Pinion focuser is a match made in heaven. Sharp stars made easy!



















Larry C. Verified Buyer –
1st light with my new GT81 was very disappointing, bright stars (unfocused) displayed “wedges” in the image at 11 & 5 o’clock positions, I suspected pinched optics, reaching out to WO support they responded:
“Thank you for reaching out. The spikes you are seeing on bright stars are not due to pinched optics. This effect is actually ca
used by the collimation screws on the lens cell, which are designed to help with precise optical alignment.
If you find the spikes undesirable, you can gently loosen the screws to minimize this effect. ” . . . “However, please note that this occurrence is completely normal and does not indicate any issue with the lens”
none of my other refractors display such artifacts . . . YMMV
I had contemplated purchasing a 2nd to create a side-by-side installation, given the experience with this scope – I wont be buying more WO products. . .
Also note that to use the new GT Flattener with this scope you require a spacer . . . which was not apparent at the time I purchased the flattener. . . checkout the WO product page for details