William Optics Mighty-Cat 71 WIFD 30th Anniversary Edition A 71 mm Petzval astrograph with 230 mm focal length at f/3.2. The 43.2 mm image circle accompanies a seven-element EVO design containing three Super ED elements.
Manufacturer model: William Optics Mighty-Cat 71 WIFD 30th Anniversary Edition · Specifications checked against manufacturer data on 2026-11-03
A 71 mm Petzval astrograph with 230 mm focal length at f/3.2. The 43.2 mm image circle accompanies a seven-element EVO design containing three Super ED elements.
No separate field flattener is needed. WIFD rack-and-pinion focusing provides 35 mm travel. A Sensor Tilt Xterminator STX-R and camera rotator support alignment and framing.
M54 and M48 adapters connect the camera train. The mounting plate uses Vixen-style / Arca-Swiss profiles.
Tube length: 315 mm. OTA weight: 3.38 kg; total weight: 4.1 kg.
William Optics manufacturer specifications
This model is designed for astrophotography; William Optics states that its optical design does not support visual observing.
Use the exact anniversary edition and adapter-specific focusing range.
| Requires external flattener | No |
|---|---|
| Focusing aid | Bahtinov mask integrated into front cover |
Data sheet
William Optics Mighty-Cat 71 WIFD 30th Anniversary Edition A 71 mm Petzval astrograph with 230 mm focal length at f/3.2. The 43.2 mm image circle accompanies a seven-element EVO design containing three Super ED elements.
Manufacturer model: William Optics Mighty-Cat 71 WIFD 30th Anniversary Edition · Specifications checked against manufacturer data on 2026-11-03
