Pleiades 111: Seven-Element Astrograph for Full Frame
The William Optics Pleiades 111 is a pure astrograph, built around a seven-element optical design with FPL-53 glass and integrated corrector. Stars remain sharp points even in the corners of a full-frame sensor, without a separate flattener. The mid-range of the line: serious aperture and image scale, still manageable on a mid-range equatorial mount.
Fast system, short exposures
With a 111 mm aperture and a 528 mm focal length (f/4.8), this is a fast photographic system: lots of signal in a short amount of time, allowing for deeper exposures per night. The included camera adapters directly connect common imaging trains, and the Bahtinov mask allows for precise focusing. This is a camera instrument: visual use with eyepieces is not what this tube is designed for.
In the box
- Optical tube Pleiades 111/528 with seven-element optics and WIFD focuser
- Integrated corrector
- M54 and M48 Camera Adapters
- Vixen-Style dovetail
- Handle
- Bahtinov mask
- Soft carrier bag
Featured accessories
A William Optics UniGuide Guiding Scope completes the setup for long exposures; choose the size that fits your mount and camera.
For whom yes, for whom no
Suitable for: Advanced astrophotographers who want deep exposures of nebulae and galaxy clusters in short integration times. Not for: Those who want to observe visually or are just starting out; this is a tool for a dedicated astrophotography setup.
Specifications
| Optical design | Apochromatic astrograph, 7 elements with FPL-53 |
| Opening | 111 mm |
| Focal length | 528 millimeters |
| Opening ratio | f/4,8 |
| Field of view | Flat and corrected to full-frame |
| Use | Astrophotography (camera-instrument) |
| Execution | OTA (loose tube) |
Unsure about the right tube for your camera and mount? The telescope selection aid helps you choose. Also view all Refracting telescopes and the full range of William Optics.
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