OTA · MSRP $18,998
William Optics Pleiades 181
Key specifications
| Aperture | 181 mm |
|---|---|
| Focal length | 998 mm |
| Focal ratio | f/5.5 |
| Optical design | Other |
| Weight | 15 kg |
All specifications
| Focuser type | 4.1 inch rack-and-pinion, EAF compatible, 43 mm travel |
|---|---|
| Tube length | 1231 mm |
| Dovetail | Losmandy |
About
William Optics' largest astrograph: a 181 mm f/5.5 seven-element design with three Super ED elements, needing no flattener and covering a 55 mm image circle. Built on a 4.1-inch rack-and-pinion focuser with 43 mm of travel, supplied with a tilt adjuster, rotator and M68/M54/M48 camera adapters, on a Losmandy dovetail.