William Optics

Gran Turismo 81 f/5.9 Triplet APO with Uniguide 50


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  • $1,538.00
  • Regular price $1,701.00

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LIMIT ONE PER CUSTOMER

Limited Availability Bundle Includes Color Matched Uniguide 50mm Guide Scope. While Supplies Last.

 

Innovative Bahtinov Mask Cover (Patented) & New Dovetail Plate included!

The GT81 three-element APO offers superb quality for imaging and visual use at an affordable price!From the pristine white finish on the CNC to the elegant gold trim which has more than just good looks...

Optically Unbeatable

  • Triplet air-spaced 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.
  • Ideal for astrophotography.

2.5”R&P Focuser

2.5”R&P Ultra robust focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting! Heavy duty: perfect for your accessories.

Simply Beautiful Finish

Pure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube, with Gold, Red, or Space Grey trim finish, retractable dewshield, and dewshield cap.

Top quality anodizing.

Very compact for carrying on flights.

Attention to Details

2" & 1.25" adapter included in the price.

Anti-marring brass compression rings.

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!

     

    Aperture

    81 mm (3.25")

    Focal Length

    480 mm

    Focal Ratio

    f/5.9

    Glass Type

    FPL-53

    Optical Design

    Triplet

    Tube Weight

    9 lbs

    Tube Length (retracted)

    390mm

    • Mounting Rings
    • CNC Carry Handle Bar
    • Dovetail Plate
    • 2.5” R&P Focuser with 2" and 1.25" adapters.
    • Innovative Bahtinov Mask Cover (Patented)
    • Soft Carry Case

    SKU: GT81-IV-GREY-UG50
    Barcode:

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