William Optics Gran Turismo 71 APO Refractor - Red

Product Details

• Description
• Specifications
• Included Items
• Recommended Products
• Reviews

• 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, red trim finish, retractable dew shield, dew shield cap.
  • Top quality anodizing.
  • Very compact for carrying on flights.

  

• specifications

  Aperture	71 mm (2.75")
  Focal Length	420 mm
  Focal Ratio	f/5.9
  Free Shipping	Yes
  Glass Type	FPL53
  Limiting Magnitude	11.1
  Optical Design	Triplet Refractor
  Tube Length	325mm
  Tube Weight	2.8kg (6.1 lbs)

• included items

  • William Optics Gran Turismo 71 APO Refractor
  • Built-in Bahtinov Mask
  • CNC Handle Bar
  • 2.5" R&P Focuser
  • Soft Carry Case
  • William Optics Camera Angle Rotator