William Optics Pleiades 68 Astrograph f/3.8 (Pre-Order)

Lens Type

7 Elements Astrograph Design (Contain 3 Super ED)

Focal Length

260mm

Diameter

68mm

Aperture

f/3.8

Image circle

48mm FF

Flattener

No Flattener Required

Adapters

M48 & M54 camera adapter included

Focuser

WIFD (WO INTERNAL FOCUS DESIGN)

Compatible with EAF

Focus travel

0-44mm (Scale is 0-50mm)

Lens Material

FPL-53

Camera Format

Full Frame

DSLR

Mirrorless

CMOS

CCD

T-Mounts Supported

Canon EF, RF

Nikon F, Z

Sony E

Pentax K

Micro Four Thirds (M4/3)

FUJI X

Tube Length

346mm

Extension Tube Length

410mm

Total Weight

8.38lbs / 3.8kg

Attention: 
This telescope model does not feature an internal M48 filter thread due to its proximity to the second lens group near the camera adapter.This design choice prevents interference with the lenses within the telescope tube, making direct attachment of a 48mm filter challenging. 
For optimal results, we recommend using a filter wheel attached to either M48 or M54 thread. 
This ensures seamless filter usage without compromising the telescope's optical performance.

Critical Backfocus Information: 
The recommended backfocus for our 68 telescope is precisely 55mm. Given its fast F ratio, maintaining an exact 55mm backfocus is crucial for optimal performance. 
Please ensure accurate adjustment to enhance the sensitivity and overall functionality of your telescope.