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ZWO

APO 65/416 FF65 Refractor Telescope

APO 65/416 FF65 Refractor Telescope

$1,165.00
$1,165.00
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✅ Orders accepted

🚚 Estimated delivery time: 30 days

The FF65 is a Flatfield astrograph with an aperture ratio of f/6.4 and a focal length of 416 mm.

Instead of the quadruple structure of the other ZWO FF apochromatics, the FF65 is a The quintuple reflector with two ED lenses allows for excellent control of chromatic and other aberrations. With its self-leveling design, the FF65 offers significant advantages for astrophotography. It features illumination for full-frame cameras and a fine dot pattern with only minor distortion of peripheral stars.

Optical design

Instead of buying additional flatteners, calculating the backfocus of the flattener, or adjusting the correct distance, you can easily equip this apochromatic lens with different photographic accessories, keep the object in focus, and the entire optical system will be perfectly adjusted for the shot.

The FF65 comes with a removable dew shield, a Vixen/GP viewfinder shoe, a prism guide, handle clamps, and various camera adapters (M48, M54, M68).

The corresponding backfocus applies to these adapters:

176 mm from the M48x0.75 external thread

105 mm from M54x0.75 external thread

130 mm from M68x1 external thread

Specs

  • Aperture: 65 mm
  • Focal length: 416 mm
  • Focal ratio: f/6.4
  • Optical design: Apochromatic quintuple with FMC
  • Corrected field: 44 mm
  • Resolution: 2.12″
  • Limiting magnitude: 12.3
  • Maximum useful magnification: 130x

Tube and mechanics

  • Aluminum tube, with internal anti-glare deflectors
  • Length: 420mm | Transport: 328 mm
  • Weight: 2.8 kg
  • Rack and pinion focuser with 1:10 reduction, rotary
  • Connections: 2″ | Camera threads M48 / M54 / M68
  • Backfocus: 121 mm

Configuration

  • OTA (unmounted)
  • Integrated corrector
  • Compatible with 1.25″ and 2″ accessories

Included accessories

  • Clamps with handle
  • Vixen Style Dovetail Plate
  • Retractable sunshade
  • Camera adapter

Applications

  • Astrophotography: outstanding
  • Moon and planets: yes
  • Deep sky (nebulae and galaxies): yes
  • Sunscreen: only with appropriate filter

Recommended user

  • Advanced users
  • Not recommended for beginners or observatories
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Telescope accessories