FF65 Quadruplet APO
ZWO
From $799.00
2 stores
In stock
The ZWO FF65 is a compact 65mm quintuplet apochromatic refractor designed for portable astrophotography of deep-sky objects and wide-field imaging. Featuring a self-flattening optical design with two ED glass elements, it eliminates the need for a separate field flattener while delivering flat-field performance across a 44mm image circle suitable for full-frame cameras. The dual-speed 2.5" rack-and-pinion focuser, lightweight construction at 2kg OTA, and included M68/M54/M48 adapters make this refractor an ideal travel telescope for both imaging and visual observation of planets and nebulae.
Specifications
| Optical design | Quintuplet air-spaced APO |
| Aperture | 65 mm |
| Image Circle | 44 mm |
| OTA Weight | 2 lb |
| Field Flattener Required | false |
| Central RMS Radius | 2.5 μm |
| Focuser Speed Ratio | 1:10 |
| Self-Flattening Design | ✓ |
| Focuser Type | 2.5 inch rack and pinion |
| ED Glass Elements | 2 |
| Focal ratio | f/6.4 |
| Included Adapters | M68, M54, M48 |
| Focal length | 416 mm |
| Full Package Weight | 2.8 kg |