Lunette APO Quintuplet 72mm f/5.6 FRA400 with Rotating Eyepiece - Askar

Discover the Askar FRA400 astronomical telescope, a 72mm quintuplet apochromatic refractor ideal for astrophotography. With its precise construction and high-quality components, this telescope offers clear and aberration-free images.

• Features:

  • Aperture: 72 mm
  • Focal length: 400 mm
  • Focal ratio: f/5.6
  • Design: Quintuplet apochromatic with 5 elements and two ED lenses
  • Image circle: 44 mm with full illumination and correction
  • Working distance: 140 mm
  • Eyepiece holder: Crayford focuser and 3" stable rack-and-pinion with 360° rotation
  • Receptacles: 2" and 1.25" with external M68x1 threading
  • Included adapter: M68 to M48x0.75
  • Dovetail bar: GP/EQ5 style with connection for photo tripod and carrying handle

• Advantages:

  • Superior chromatic aberration correction thanks to two ED glasses
  • Flat field up to 44 mm diagonal without the need for additional flatteners
  • High-precision optics and mechanics for optimal performance in astrophotography
  • Robust and rotatable eyepiece holder for precise framing
  • Possibility to increase speed to f/3.9 with an optional corrector/reducer

• Compatibility:

  • Compatible with various accessories via M68x1 threading and 2" and 1.25" receptacles

• Tips and tricks:

  • Use the AS72RED corrector/reducer to achieve a focal ratio of f/3.9 and reduce exposure time by half

The Askar FRA400 telescope is a perfect choice for demanding astrophotographers seeking high-quality optics at a competitive price.