SWAN: the perfect compromise between quality, cost, eye-relief and edge sharpness. All with a super-wide 72 deg. F.O.V. ! The ultimate 1.25 " SWA eyepiece. Try and compare!

Specifications:

• Internally baffled, All lenses' edges and internal spacers blackened, Fully multicoated
• Model - SWAN 20
• Focal Length - 20 mm
• Lens Structure (#Elements/#Groups) - 5/4
• Field of View - 72
• Eye Relief - 17 mm
• Barrel - 1.25"
• Coating - FMC
• Parfocal - Yes
• Weight - 100 g

PERFECT MATCH FOR OUR FAST 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

SHARP AND COMFORTABLE

• Internally fully blackened (lenses' edges and internal spacers)
• 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 filters' usage