From its immaculate CNC-machined powder white aluminum tube to its elegant red trim, the stunning new William Optics 71 mm Gran Turismo APO Refractor is a sight to behold. But external good looks are not the only feature that makes the GT71 the crown jewel of the apochromatic refractor world. It contains a 3-element objective that utilizes FPL-53 extra-low dispersion glass for lowering any less important spectral lines to an unbelievable extent.

Optically Unmatched

Triplet air-spaced objective using FPL-53 glass in a modifiable extremely high precision CNC machined lens cell

Excellent color correct and outstanding sharpness

With an f/5.9 focal ratio, the WO GT71 refractor is optimized for astrophotography

Each lens has full multi-coatings with all surfaces containing a special super-high transmission coating (STM)

2.5" Rack & Pinion Focuser

Ultra smooth 1:10 dual-speed 2.5" rack & pinion focuser with no image shift

Comes with two locking screws on angled positions to allow for applications with bulky payloads

Large aluminum knob with integrated 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.

CNC Carry Handle

Color anodized to match the WO refractor

Accepts the William Optics UniGuide Slide Base Guide scope and the 50 mm Slide Base Guiding Rings. Both of these are not included with this purchase, but can be found in the Recommended Accessories section. The saddle handle bar accepts Synta-style dovetails.

Patented Design

Both sides as well as the back have stainless steel reinforcement inserts for taking on heavy loads without any problems

Precise camera alignment via graduated scale

Elegant Finish

Powder white CNC-machined aluminum tube with elegant red trim accents, lens cap, and retractable dew shield

Supreme quality anodizing

Light and compact enough to carry on an airplane

SKU Number	WYO-A-F71GTII-RD-AP
Model Number	A-F71GTII-RD-AP
Telescope Series	William Optics GT
Focal Ratio	f/5.9
Optical Design	Refractor
Telescope Aperture	71mm (2.8")
Telescope Mount Type	No Mount - OTA Only
Type of Electronics	OTA Only - No Electronics
Number of Refractor Elements	3 (Triplet)
Focal Length (mm)	420 mm
Limiting Stellar Magnitude	11.1
Focuser Style	Rack & Pinion
Focuser Size	2.5"
Focuser Speed	Dual Speed
Telescope OTA Outside Diameter (in.)	3.2" (81 mm)
Refractor Dew Shield Diameter (in.)	3.6" (91 mm)
Telescope OTA Weight (lb.)	5 lb
Refractor OTA Length - Extended (in.)	16.8" (426.72 mm)
Refractor OTA Length - Retracted (in.)	12.8" (325.12 mm)
Warranty	William Optics - 2 Years