Super Wide Angle (72°) 1..25" 20mm (E-SWA20)

Super Wide Angle (72°) 1..25" 20mm (E-SWA20)

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 for 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 
• Fully internally 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 or 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.

  • 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: 100gram