Williams Optics Gran Turismo 71 APO Refractor
The stunning new William Optics Gran Turismo 71 Apo is the new jewel of the apochromatic refractor world. The new GT71 features a 3-element objective using high-quality FPL-53 extra-low dispersion glass that reduces any secondary spectrum to an unbelievable degree.
2.5" R&P Focuser
Triplet air-spaced objective (FPL-53) in adjustable CNC machined ultra high precision lens cell.
Extremely sharp with 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.
Extra-smooth 360 deg. rotatable 2.5" R&P focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting!
Comes with two locking screws on angled positions for heavy load applications.
- Large aluminum knob with installed thermometer.
Simply Beautiful Finish
Stainless steel reinforcement inserts on both sides and on the back to allow heavy loading without problems.
Graduated scale for precise camera alignment.
Quality fit and finish: powder-painted white CNC-machined aluminum tube, gold trim finish, retractable dewshield, dewshield cap.
Top quality anodizing.
Very compact for carrying on flights.
- Gran Turismo refractor OTA
- Mounting Rings
CNC Carry Handle Bar
2.5” R&P Focuser
Innovative Bahtinov Mask Cover (Patented)
Soft Carry Case
Triplet air-spaced objective with f/5.9 is ideal for astrophotography