The William-Optics 71 mm Astrograph is a compact powerhouse for anyone seeking uncompromising image quality. The combination of a 71 mm aperture and a focal length of just 230 mm delivers an ultra-fast f/3.2 system that reveals even faint nebulae in astonishingly short exposure times.
The Advanced Petzval design ensures perfectly corrected imaging across the entire field – which means: no additional flattener required. The generous 43.2 mm full-frame image circle effortlessly accommodates modern camera sensors and opens up a vast, razor-sharp field of view without any vignetting.
With the precise WIFD rack-and-pinion focuser, which is fully compatible with electronic focusers (EAF), the focus remains absolutely stable even with heavy cameras. And thanks to the wide range of mounting options, the system is compatible with Canon, Nikon, Sony, Pentax, Fujifilm and MFT cameras – simply mount it and get started.
Scope of Delivery:
- Tubus
- Tube Ring with carrying handle
- Mounting plate
- Covers
Download Anleitung (engl.)
Products specifications
| Technical Data | | Lens Type | 7-Element Advanced Petzval | | Lens Elements | Super ED Glass x2, Lanthanum Glass x2, X-Element x3 | | Focal Length | 230 mm | | Diameter | 71 mm | | Focal Ratio | f/3.2 | | Image Circle | 43.2 mm | | Focuser | WIFD R&P Focuser, Compatible with EAF | | Focuser Travel | 0-35 mm | | Adapter Included | Sensor Tilt Xterminator (STX-R), Rotator, M54, M48 | | Optional Flattener | No Flattener Required | | T-Mount Support | Canon EF, RF, Nikon, Sony, Pentax, Fuji | | Camera Format | Full Frame, PAS, M4/3 | | Dovetail Type | Vixen, Arca-Swiss | | Tube Length | 315 mm | | OTA Weight | 3.38 kg / 7.45 lbs | | Total Weight | 4.1 kg / 9.04 lbs |
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