The ZWO FF series is a potential fit for your astro-photography needs.
The ZWO FF65 APO is a high-performance 65mm f/6.4 astrograph designed for astrophotographers who want a fully corrected, wide-field imaging solution without the hassle of additional field flatteners or reducers. Whether you're a seasoned deep-sky photographer or just getting started, this telescope delivers sharp, pinpoint stars across the entire field of view, even with full-frame sensors.
Unlike traditional triplet or doublet refractors that often require extra accessories to correct field curvature, the FF65 APO features a precision-engineered quadruplet optical design that naturally produces a flat image plane. This makes it an excellent choice for those looking for a plug-and-play imaging experience without needing extra adapters or correctors.
A Four-Element Optical System for Outstanding Performance
At the heart of the ZWO FF65 APO is a carefully crafted four-element optical system that suppresses aberrations and maximizes clarity. Two extra-low dispersion (ED) lenses minimize chromatic aberration and ensure exceptional color accuracy, an essential feature for astrophotography. The design provides a fully illuminated and corrected 44mm image circle, making it ideal for DSLR, mirrorless, and dedicated astronomy cameras.
With its f/6.4 focal ratio, the FF65 APO balances light-gathering capability and resolution, allowing for deep-sky imaging of nebulae, galaxies, and star clusters with shorter exposure times.
Precision Focusing and Stability
A standout feature of the FF65 APO is its 2.5-inch rack-and-pinion focuser, which delivers smooth, precise, and stable focusing. Unlike Crayford-style focusers that can slip under the weight of heavy imaging equipment, the rack-and-pinion design ensures that focus remains locked, even when using large cameras or filter wheels. The dual-speed fine-focus control allows for precise micro-adjustments, helping you achieve razor-sharp detail in your astrophotography.
The focuser also includes a built-in tilt adapter, allowing for fine-tuning sensor alignment and correcting for any minor optical misalignments in your imaging train—an important feature for high-resolution deep-sky imaging.
Lightweight, Portable, and Ready for Travel
With a compact 65mm aperture and 416mm focal length, the ZWO FF65 APO is an ideal travel telescope for astrophotographers on the go. Whether you're heading to a dark-sky site or setting up a grab-and-go rig at home, its lightweight yet durable CNC-machined aluminum tube ensures reliability without adding unnecessary weight.
The retractable dew shield helps reduce stray light and condensation, while the included tube rings and Vixen-style dovetail make it easy to attach to a variety of mounts. Whether imaging from your backyard or chasing dark skies across the country, the FF65 APO is designed to be both portable and powerful.
Why Choose the ZWO FF65 APO?
- Fully corrected quadruplet design eliminates the need for an external field flattener
- Flat 44mm image circle supports full-frame and APS-C cameras with edge-to-edge clarity
- Dual ED glass elements for superior chromatic aberration control and color fidelity
- Fast f/6.4 focal ratio for efficient deep-sky imaging with shorter exposure times
- 2.5-inch rack-and-pinion focuser with dual-speed adjustment and zero image shift
- Built-in tilt adapter for precise sensor alignment
- Lightweight and travel-friendly with a sturdy CNC-machined body
- Retractable dew shield and included accessories for a complete out-of-the-box experience
For those looking for a versatile, high-performance astrograph that delivers professional-level results without the complexity of extra correctors, the ZWO FF65 APO is an outstanding choice. With its premium optics, reliable mechanics, and user-friendly design, this refractor is built to make deep-sky imaging easier, sharper, and more enjoyable than ever before.
