OTA · MSRP $1,498
William Optics Cat 71 WIFD
Key specifications
| Aperture | 71 mm |
|---|---|
| Focal length | 350 mm |
| Focal ratio | f/4.9 |
| Optical design | Quadruplet APO |
| Weight | 3.22 kg |
All specifications
| Focuser type | WIFD rack-and-pinion, EAF compatible, 0-35 mm travel |
|---|---|
| Tube length | 427 mm |
| Dovetail | Vixen |
About
A 71 mm f/4.9 four-element Petzval astrograph needing no flattener, covering a 48 mm image circle. Built on the WIFD rack-and-pinion focuser with 35 mm of travel, supplied with a tilt adjuster, rotator and camera adapters, on a dovetail that works as both Vixen and Arca-Swiss.