SWAN 9mm 1.25" Eyepiece (E-SWA09)
SWAN 9mm 1.25" Eyepiece (E-SWA09)
SWAN 9mm 1.25" Eyepiece (E-SWA09)
SWAN 9mm 1.25" Eyepiece (E-SWA09)
SWAN 9mm 1.25" Eyepiece (E-SWA09)

William Optics

SWAN 9mm 1.25" Eyepiece (E-SWA09)

Regular price
$ 87.00 Sold out
Sale price
$ 87.00
Unit price

Please contact Cloud Break Optics to order this product


SWAN: a premium eyepiece for your most demanding observations.

Unforgettable views of star clusters and the moon at 72 deg. F.O.V. 

A premium eyepiece at a fraction of the cost it’s worth!

Super Wide FOV
• Outstanding super-wide field of view: 72 deg. F.O.V. 
• Fully Multicoated lenses for excellent transmittance. 
• Reduced chromatic aberration. 
• Improved contrast compared to similar EPs.

Great Contrast
• Fully internally blackened (lens edges and internal spacers). 
• No flaring or ghosting on high-contrast objects. 
• Parfocal.

Light and Easy 
• Soft rubber eyecup.
• Long eye-relief: 12mm. 
• No internal reflections, kidney beaning or other distracting distortions.

Terrific Fit and Finish 
• High-resistance anodized black barrel.
• Smooth design for no hook up in your focuser. 
• Threaded for filters’ usage.


Internally baffled, All lenses' edges and internal spacers blackened, Fully multicoated
Model SWAN 9
Focal Length 9mm
Lens Structure (#Elements/#Groups) 5/4
Field of View 72
Eye Relief 12mm
Barrel 1.25"
Coating FMC
Parfocal Yes
Weight 70 g


Personal Upgrade Path

Buy risk-free: When it’s time to trade up you’ll get the most value for your used gear.