Pleiades 68mm f/3.8
William Optics
From ~$2,113.57
3 stores
The William Optics Pleiades 68 is a premium 7-element apochromatic refractor designed exclusively for deep-sky astrophotography. With its ultra-fast f/3.8 focal ratio and 260mm focal length, it delivers exceptional light-gathering power for wide-field imaging in shorter exposures—more than twice the light-gathering speed of an f/5.6 telescope. The innovative WIFD (Internal Focus Design) focuser moves the optical elements internally rather than the camera, eliminating sensor tilt and vignetting while maintaining perfect optical alignment. Compatible with full-frame cameras, the 48mm flat image circle provides edge-to-edge sharpness without requiring an external flattener.
Astronomy Plus
Pleiades 68 APO F/3.8 WIFD (T-P-68BU)
Worldwide shipping
CA$2,877.00
~$2,113.57
Agena Astro
William Optics Pleiades 68mm f/3.8 Astrograph Telescope
Worldwide shipping
$2,198.00
Astroshop.eu
Apochromatic refractor Pleiades 68 AP 68/260 Astrograph OTA
Worldwide shipping
€2,290.00
~$2,718.52
Specifications
| Aperture | 68 mm |
| Optical Elements | 7 |
| Field Flattener Required | false |
| Focuser Type | WIFD (Internal Focus Design) |
| Glass Type | FPL-53 |
| Image Circle | 48 mm |
| Camera Adapters | M48, M54 |
| Back Focus | 55 mm |
| EAF Compatible | ✓ |
| Focal ratio | f/3.8 |
| Focuser Speed Ratio | 10:1 |
| Focal length | 260 mm |
| Tube Length | 346 mm |
| Weight | 3.8 lb |
| Super ED Elements | 3 |