WO - 20mm SWAN Eyepiece 1.25" Barrel BLOWOUT SALE !!! 15% Off !!! While Supplies Last !!!

SWAN: the perfect compromise between quality, cost, eye-relief and edge sharpness.

All with a SWA super-wide angle 72 deg. F.O.V. ! The ultimate 1.25" SWA eyepiece.

Try and compare! Ideal with SCT and refractor telescopes.

Perfect match with William Optics telescopes
• Outstanding super-wide field of view: 72 deg. F.O.V.
• Fully Multicoated lenses for excellent transmittance.
• Outstanding chromatic aberration correction.
• Excellent contrast and light throughput for sharp viewing.

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

Light and Easy
• Soft rubber eyecup
• Long eye-relief: 17 mm
• No internal reflections, kidney bean effect

Terrific Fit and Finish
• High-resistance anodized black barrel.
• Smooth design for no hook up in your focuser.
• Threaded for 1.25" filters.

Internally baffled, All lenses' edges and internal spacers blackened, Fully multicoated

Model 	SWAN 20
Focal Length 	20mm
Lens Structure (#Elements/#Groups) 	5/4
Field of View 	72
Eye Relief 	17mm
Barrel 	1.25"
Coating 	FMC
Parfocal 	Yes
Weight 	100g