William Optics SWAN eyepiece 40mm 2'' 72°

SWAN – a reference-class super wide-angle eyepiece at an almost unbeatable price!
Full multi-coating and a state-of-the-art design with a 72° apparent field of view transform this eyepiece into a "spaceship window," offering incredible views of the universe. Experience the "moonwalk effect" to perfection—try it out!

Precisely calculated field stops, blackened lens edges, and multi-coating make this eyepiece the perfect companion for any occasion.

Technical Data
Performance
Focal length (mm)
40
Apparent field of view (°)
72
Eye relief (mm)
28
Number of lens elements
5
Connection (telescope side)
2"
Optical coating
Multi-coated
Special features
Adjustable eyecup
- (fold-down)
Parfocal
Yes
Filter thread
Yes
Inert gas filling
No
General
Type
Eyepiece
Design
SWA
Weight (g)
570
Series
SWAN