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