ZWO FF70 APO Flat-Field Apochromatic Refractor

The ZWO FF70 APO is a premium flat-field apochromatic refractor designed for both astrophotography and visual observing. Featuring a 70mm aperture, 490mm focal length, and native flat-field optical design, it delivers exceptional image quality while remaining lightweight and portable.

Native Flat-Field Optical Design

The FF70 APO features a four-element fully air-spaced apochromatic optical system that produces a naturally flat imaging field without requiring an additional field flattener.

ED Glass for Enhanced Colour Correction

An extra-low dispersion (ED) glass element reduces chromatic aberration and improves colour fidelity, delivering sharper and more accurate images.

44mm Image Circle for Full-Frame Cameras

The telescope supports full-frame sensors with a generous 44mm image circle, providing excellent edge-to-edge sharpness and consistent image quality.

Lightweight and Portable Design

With an optical tube weight of just 2.5kg and a total system weight of approximately 3kg including rings and dovetail, the FF70 APO is ideal for travel and portable imaging setups.

Precision Dual-Speed Focuser

A rigid 2.4-inch rack-and-pinion focuser features a 1:10 fine-focus mechanism for precise adjustments. A built-in 360° rotator allows easy camera framing.

Retractable Dew Shield

The retractable dew shield improves portability while helping reduce stray light and dew formation during observing and imaging sessions.

Flexible Accessory Compatibility

The included photography extension tube features a 2-inch filter thread and comes with M48×0.75 and M54×0.75 adapters for compatibility with a wide range of imaging accessories.

Quick-Release Mounting Rings

Detachable mounting rings allow quick installation and easy transport of the telescope.

Ideal For

Astrophotography, full-frame imaging, wide-field deep-sky photography, portable astronomy setups, and visual observation.