ZWO FF70 APO Flat-Field Apochromatic Refractor
The ZWO FF70 APO Refractor is a lightweight and compact refractor telescope designed for visual observation and astrophotography.
*Focus can be achieved within a back focus range of 32.5–82.5 mm, measured from the M54–M48 interface shoulder.
Main Features of the telescope
Flexible Connectivity for Multiple Configurations
Uniqueness
1. Lightweight & Compact
This model features a 70 mm aperture and 490 mm focal length (f/7.0). It offers an excellent balance between portability and performance.
The optical tube weighs just 2.5 kg. Total system weight is 3 kg including the mounting rings and dovetail plate.
2. Four-Element Optical Design
The unit features a four-element, air-spaced design. All elements work together to deliver a flat imaging field without a field flattener.
One ED (extra-low dispersion) element reduces chromatic aberration. This results in superior color correction and impressive image clarity.
3. 44 mm Image Circle — Full-Frame Support
With a 44 mm image circle, the unit fully supports full-frame sensors and advanced imaging setups.
It delivers sharp star fields across the frame. This ensures professional edge-to-edge performance to meet astrophotography demands.
4. Native Flat-Field Design
The native flat-field optical design removes the need for leveling mirrors. This streamlines the setup for any astrophotography enthusiast.
No complex back focus calculations are required. Simply attach your camera and start capturing once focus is achieved.
Convenient Design
5. Coarse & fine focus adjustment
Equipped with a 2.4-inch rack-and-pinion focuser, it offers precise control using a 1:10 coarse and fine focus mechanism.
A built-in 360° rotator at the rear allows for smooth camera angle adjustments. It pairs perfectly with an asiair pro for remote control.
6. Retractable Dew Shield
The optical tube features a retractable dew shield. This reduces storage length and protects the optics from moisture.
CNC machining and internal anti-reflection coatings minimize stray light. This ensures high contrast during deep-sky sessions.
7. Quick-Release Mounting Rings
The mounting rings are fully detachable. This allows for a quick and easy setup or teardown of your telescope system.
8. Photography Extension Tube
A photography extension tube is included. It features a 2-inch filter thread and rear adapters in M48×0.75 and M54×0.75 standards.
This versatility allows for seamless integration with a wide variety of professional imaging accessories and cameras.
Performance
Optical Layout
Star Field Map
Product Diagram
Technical Specifications
In the Box
Warranty
ZWO 2-Year Warranty
