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William Optics Golden GT 81mm f/5.9 APO w/2" R&P Focuser and Field Flattener - A-F81GT-AP

William Optics   ——   SKU: WIL-A-F81GT-AP
$1,321.29 CAD
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About the William Optics Golden Gran Turismo 81 f/5.9 APO w/ 2" R&P Focuser...

The stunning new William Optics Gran Turismo 81 APO is the new jewel of the apochromatic refractor world. From the pristine white finish on the CNC to the elegant gold trim which has more than just good looks... New William Optics Telescope GT81 features a 3-element objective using high-quality FPL-53 extra-low dispersion glass that reduces any secondary spectrum to an unbelievable degree.

 

Optically Unbeatable...

-Triplet air-spaced William Optics Telescope 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.

 

2.0" R&P Focuser...

-Extra-smooth 360 deg. rotatable 2" 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.

 

Patented Design...

-Stainless steel reinforcement inserts on both sides and on the back to allow the William Optics Telescope to achieve heavy loading without problems.

-Graduated scale for precise camera alignment.

 

Simply Beautiful Finish...

-Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum William Optics Telescope tube, gold trim finish, retractable dewshield, 360 deg. rotatable R&P focuser, dewshield cap.

-Top quality anodizing.

-Very compact for carrying on flights.

 

Attention to Details...

-2" & 1.25" adapter included in the William Optics Telescope price.

-Anti-marring brass compression rings.

-Carry handle with V-shape night glowing illuminator.

-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!

 

 

William Optics Golden Gran Turismo 81 f/5.9 APO w/ 2" R&P Focuser Features...

 

  • Features a 3-element objective using high-quality FPL-53 extra-low dispersion glass that reduces any secondary spectrum to an unbelievable degree

     

     

  • Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube, gold trim finish, retractable dewshield, 360 deg. rotatable R&P focuser, dewshield cap

     

     

  • Extra-smooth 360 deg. rotatable 2" R&P focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting

     

     

  • Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces

     

     

  • Triplet air-spaced objective (FPL-53) in adjustable CNC machined ultra high precision lens cell

 

 

William Optics Golden Gran Turismo 81 f/5.9 APO w/ 2" R&P Focuser Specifications...

Aperture: 81mm

Focal Ratio: F/5.9

Focal Length: 478 mm

Objective Type: Three element with FPL-53 Air Spaced, Fully Multi-Coated,STM coatings

Resolving Power: 1.43 seconds of arc

Limiting Magnitude: 12.2

Lens Shade: Retractable

R&P Focuser: 2" 360 deg Rotating Camera-angle Adjuster, 1:10 fine focus

1.25" Adapter

1.25" Adapter: 2" Brass Compression Rings

Field Stops: Knife-Edge Baffles

L-type Mount: Bracket

Tube Diameter: 90mm

Tube Length: 440mm Fully Retracted - 484mm Fully Extended

Tube Weight: 3.7 kg

William Optics Product Number: A-F81GT