2019 All New 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.
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.
2.5" R&P Focuser
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.
Stainless steel reinforcement inserts on both sides and on the back to allow heavy loading without problems.
Graduated scale for precise camera alignment.
Simply Beautiful Finish
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.
• Mounting Rings
• New 2019 CNC Carry Handle Bar
• New Dovetail Plate
• 2.5” R&P Focuser
• Innovative Bahtinov Mask Cover (Patented)
• Soft Carry Case
• Two-year, no fuss warranty and constant customer service!
• M63 -2” Rotolock
• 1.25” Rotolock
• 2019 All New Slide-base 50mm Guiding Rings
• 2019 All New Slide-base UniGuide 50mm Scope
• New Full frame x0.8 Flattener
Tube with Rings and Dovetail Weight：2.93kg