ZWO FF110 APO Flat-Field Apochromatic Refractor

The ZWO FF110 APO is a premium flat-field apochromatic refractor designed for high-performance astrophotography and visual observing. Featuring a four-element optical design, full-frame imaging support, and a native flat-field system, it delivers exceptional image quality with simplified setup.

Native Flat-Field Optical Design

The FF110 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, improving colour accuracy, contrast, and overall image sharpness.

44mm Image Circle for Full-Frame Cameras

The telescope fully supports full-frame astronomy cameras with a 44mm image circle, providing excellent edge-to-edge image quality and sharp star fields.

Simplified Astrophotography Setup

The native flat-field design removes the need for additional field flatteners and complex spacing calculations, making imaging setup faster and easier.

Precision Dual-Speed Focuser

A heavy-duty 3-inch rack-and-pinion focuser features a 1:10 fine-focus adjustment mechanism for precise focusing. A built-in 360° rotator allows smooth camera angle adjustments.

Retractable Dew Shield

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

Flexible Imaging Connectivity

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

Quick-Release Mounting Rings

Detachable mounting rings allow quick installation, easy transport, and convenient storage.

Ideal For

Full-frame astrophotography, deep-sky imaging, advanced imaging systems, visual astronomy, and observatory or portable telescope setups.