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William Optics Gran Turismo 71 APO Refractor

ITEM #
WO-A-F71GT
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  • Regular price $828.00

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Accessories Added

  • Triplet air-space 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
  • F/5.9 focal ratio ideal for astrophotography

DESCRIPTION

William Optics Gran Turismo 71 APO Refractor

 

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" V-power Focuser

  • Extra-smooth new 2" Crayford focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting (up to 15Lb.)!
  • Comes with two locking screws on angled positions for heavy load applications.
  • Stainless steel reinforcement inserts on both sides and on the back to allow heavy loading without problems.
  • Graduated scale for precise camera alignment.
  • Innovative Bahtinov Mask Cover (Patented) included

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.

 

OTA Only

  • Soft Carry Case
  • Case Shoulder Strap
  • 1.25"-2" Adapter
  • Aluminum Knov Protection Cap
  • 2 Mounting Rings
  • Vixen Style Dovetail Plate
  • 2 Year Warranty Card

Imaging Package

  • everything mentioned above
  • Flat6A-71 .08x Reducer-Flattener
  • Soft Carrying Case

Anniversary Package

  • Everything mentioned above (Minus standard focuser and soft case)
  • 20th Aniversary Focuser
  • Hard Case

SPECIFICATIONS

Aperture71 mm (2.75")
Focal Length420 mm
Focal Ratiof/5.9
Free ShippingYes
Glass TypeFLP53
image circle42mm
Limiting Magnitude11.1
ManufacturerWilliam Optics
Optical TypeTriplet
Tube Length325mm
Tube Weight2.8kg (6.1 lbs)

INCLUDED ITEMS

OTA Only

  • Soft Carry Case
  • Case Shoulder Strap
  • 1.25"-2" Adapter
  • Aluminum Knov Protection Cap
  • 2 Mounting Rings
  • Vixen Style Dovetail Plate
  • 2 Year Warranty Card

Imaging Package

  • everything mentioned above
  • Flat6A-71 .08x Reducer-Flattener
  • Soft Carrying Case

Anniversary Package

  • Everything mentioned above (Minus standard focuser and soft case)
  • 20th Aniversary Focuser
  • Hard Case

Customer Reviews

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  • Reviews

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JB
03/14/2018
James B.
United States

Great experience

Still learning, but really excited