(NEW)GT81 81mm f/5.9 Apo Refractor - Gold

Product Code: A-F81GT
Availability:
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Price: 26,640NT$

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81 Soft Case (BG1-P002):

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 tube to the elegant gold trim, this telescope has more than just good looks.
The new 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 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" 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 with installed thermometer.

Patented Design
• 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.

 

 

Aperture 81mm
Focal Ratio F/5.9
Focal Length 478mm
Resolving Power 1.43"
Limiting Magnitude 12.2
Objective Type Three element with FPL-53 Air Spaced, Fully Multi-Coated,STM coatings
Lens Shade Retractable
 R&P Focuser

2" 360° Rotating Camera-angle Adjuster, 1:10 fine focus

1.25" Adapter

Field Stops Knife-Edge Baffles
L-type Mount Bracket
Tube Diameter 90mm
Tube Length (440 mm) Fully Retracted

(484 mm) Fully Extended

Tube Weight 8 lbs.( 3.7kg)

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