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.
Optically Unbeatable
- Triplet air-spaced objective (FPL-53) in adjustable CNC machined ultra high precision lens cell.
- Extremely sharp.
- Excellent color correction.
- Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces.
- This F/5.9 lens is ideal for astrophotography.
R&P Focuser
2.5” R&P Ultra robust focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting! Heavy duty: perfect for your accessories.
Simply Beautiful Finish
Pure William Optics quality fit and finish powder-painted white CNC-machined aluminum tube, gold trim finish, retractable dew shield, dew shield cap.
Top quality anodizing.
Very compact for carrying on flights.
Attention to Details
2" & 1.25" adapter included in the price.
Anti-marring brass compression rings.
90mm mounting rings are optional.
Though you will never need it, you have a 2-year warranty from WO and the certainty that we will be there to assist you even beyond that, if you need!
Package Contents:
Mounting Rings
GT81 OTA
CNC Carry Handle Bar
Dovetail Plate
2.5” R&P Focuser
Bahtinov Mask Cover
Soft Carry Case
Two-year, no fuss warranty and constant customer service!
- GT81 APO
- 2" & 1.25" Adapter Included
- Bahtinov Mask Included
- STM Multi-Coated Lenses
- f/5.9
- This is the Red version
Mounting Rings
GT81 OTA
CNC Carry Handle Bar
Dovetail Plate
2.5” R&P Focuser
Bahtinov Mask Cover
Soft Carry Case
Two-year, no fuss warranty and constant customer service!
