William Optics Gran Turismo 71 OTA. f/5.9 triplet APO, 2.5” R&P Focuser in Red with Free CAA63 Rotator

William Optics GT71 Triplet APO Refractor Telescope - Red

This impressive new William Optics 71 mm Gran Turismo Telescope represents the crown jewel of the apochromatic refractor universe. Externally, the GT71 features a CNC machined optical tube with an immaculate white finish and stylish red trim. Internally, this refractor contains a 3-element objective using high-quality FPL-53 extra-low dispersion glass to reduce any secondary spectrum to an incredible extent. This refractor also comes with the new handlebar from William Optics which will accept the silver guide rings for the Slide-base UniGuide 50mm Scope (rings and guide scope are not included). The saddle handle accepts Synta-style dovetails.

Optically Unmatched

• Three element air-spaced objective with FPL-53 glass in an adaptable CNC machined lens cell with ultra high precision

• Remarkable sharpness with superb color correction

• A focal ratio of f/5.9 makes the William Optics GT71 ideal for astrophotography

• Fully multi-coated with specialized super-high transmission coating (STM) on all surfaces of each lens

2.5" Rack & Pinion Focuser

• 1:10 dual-speed 2.5" rack & pinion focuser with no image shift, a pleasure to use when astro-imaging

• Includes two locking screws on angled positions for operations with heavy-duty payloads

• Large aluminum knob with built-in thermometer

William Optics DSD 210 Plate

• The William Optics DSD 210mm (8.27") dovetail plate has both a Vixen and Arca Swiss size at each end of the plate. The plate has two 1/4-20 threaded holes.

Exclusive Design

• Stainless steel inserts on each side and on the back provide reinforcement for heavy payloads without issues

• Graduated scale for exact alignment of the camera

Elegant Finish

• CNC machined aluminum tube painted powder white with beautiful red trim finish, retractable dew shield, and cap

• Superior quality anodizing

• Light and compact for airline travel

William Optics GT71 Red Triplet APO Refractor Specifications

• Aperture: 2.8" (71 mm)

• Focal Ratio: f/5.9

• Focal Length: 420 mm

• Resolving Power: 1.62"

• Limiting Stellar Magnitude: 11.1

• Objective: Triple element air-spaced with FPL-53 glass

• Dew Shield: Retractable

• Focuser: 2.5" Rack & Pinion with 1:10 fine focus and 1.25" adapter

• Field Stops: Baffles

• Mounting Hardware: Rings with Dual Sided Dovetail

• Tube Diameter: 82 mm

• Dew Shield Diameter: 92 mm

• Tube Length Fully Retracted: 325 mm

• Tube Length Fully Extended: 427 mm

• Tube Weight: 4.9 lbs.