OTA · MSRP $1,098
William Optics Cat 61 WIFD
Key specifications
| Aperture | 61 mm |
|---|---|
| Focal length | 300 mm |
| Focal ratio | f/4.9 |
| Optical design | Quadruplet APO |
| Weight | 2.47 kg |
All specifications
| Focuser type | WIFD rack-and-pinion, EAF compatible, 0-42 mm travel |
|---|---|
| Tube length | 365 mm |
| Dovetail | Vixen |
About
A 61 mm f/4.9 four-element Petzval astrograph needing no flattener, covering a 46 mm image circle. Built on the WIFD rack-and-pinion focuser with 42 mm of travel, supplied with a tilt adjuster, rotator and camera adapters, on a dovetail that works as both Vixen and Arca-Swiss.