ZWO FF107 APO: Quadruplet APO Telescope


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ZWO FF107 APO Astronomical Telescope

Main Features:

  • Quadruplet Air-Spaced APO Design
  • No need to calculate back focus
  • Small and Round Stars with a central RMS radius of 3µm
  • Various Adapters (M48, M54, M68, and M86)
  • Dual-Speed (1:10) Focuser
  • Self-flattening design
  • Supports both fine and coarse adjustment
  • No need for a separate field flattener

The ZWO FF107 APO is a refractive astrograph with a powerful flatfield optical design, saving you from the expensive cost of a field flattener. It eliminates the trouble of calculating the back focus distance of the flattener and connecting various accessories to achieve that distance. You can just connect any possible accessories you need. As long as the target is focused, the whole optical system is perfect for imaging. This makes the whole setting up process much more convenient, and saves your time, allowing you to pay more attention to the image shooting itself.

The FF107 APO is also a nice choice for your visual observation. It fits diagonals as well as various eyepieces and can achieve a perfect focus, and can even be used to observe planets with a super-high magnification eyepiece. The whole design of the telescope is compact and lightweight. The OTA weighs only 5.7kg, and the full package with tube rings and other accessories weighs 6.9kg. It has an aperture of 107mm. The focal ratio is f/7 and focal length is 749mm.

The FF107 APO adopts a 3+1 quadruplet lens structure which contains two pieces of ED glass that can effectively reduce chromatic aberration and enhance clarity and sharpness. It supports the full-frame imaging circle and has a fine spot diagram with tiny distortions of the peripheral stars. The 3" rigid focuser comes with a new-type 360° rotator with scales and a finder base.


  • Observing mode: 120mm
  • Aperture size: 107mm
  • Net weight: 5.7Kg
  • Focal length: 749mm
  • Gross weight: 6.9 Kg
  • Focal ratio: f/7
  • Image circle: 44mm
  • Objective lens: Quadruplet air-spaced APO (including two ED glass)
  • Imaging mode: 79mm (from the base of M48x0.75 male thread), 99mm (from the base of M54X0.75 male thread), 119mm (from the base of M68x1 male thread), 149mm (from the base of M86x1 male thread)
  • Rear-end thread type: M86x1- M68x1, M68x1-M54x0.75, M54x0.75-M52x0.75, M52x0.74-M48x0.75 (with M48X0.75 filter thread)
  • Total length: 603mm (including 2.0" eyepiece holder as dew shield contracted), 655mm (including the 4-piece adapter as dew shield contracted), 754mm (including 2.0" eyepiece holder as dew shield contracted), 806mm (including the 4-piece adapter as dew shield contracted)
  • Four-piece photographic adapter: M48x0.75

Optional Assemblies:

  1. NO.1 Optional assembly: ASI533MC Pro+OAG+ASI120Mini EAF+AM5+ASIAIR Mini +FF107 APO+Focal Reducer
  2. NO.2 Optional assembly: ASI533MM Pro+OAG+ASI120Mini +EFW+LRGBSHO+EAF+ AM5+ASIAIR Mini+FF107 APO+Focal Reducer

ZWO is a world-renowned company focusing on the development of innovative products in the field of astrophotography. ZWO is dedicated to the production of CMOS cameras, smart astro imaging devices, and astrophotography accessories. Our customers come from over 70 countries and regions.

Experience the incredible performance and convenience of the ZWO FF107 APO Astronomical Telescope, and embark on a journey to capture the beauty of the cosmos like never before.

ZWO FF107 APO: Quadruplet APO Telescope