SWAN 25mm Eyepiece

The William Optics 2" Swan 25mm Eyepiece , is incredibly inexpensive nevertheless allows for remarkable overall performance, being internally baffled and blackened, and fully multicoated it delivers an amazing 72 deg. field of view. This is a large lens rich field eyepiece at a very budget friendly price.

The 5 element optics of Swan eyepieces are extremely well made and will work very well with telescopes having a focal ratio of F6 or slower.

The superwide 72 deg field of view are fully multicoated lenses, sharp and well contrasted, have excellent transmittance, and outstanding chromatic aberration correction.

With internally fully blackened (lens edges and internal spacers) there is no flaring or ghosting on high contrast objects.

The soft rubber eyecup and extremely long eye-relief has no internal reflections makes it a pleasure to use.

William optics is well renowned for it's outstanding array of optical components. A significant number of amateur astronomers use them simply because the believe that they do the job just as as well as types priced at far higher.

The High-resistance anodized black barrel and smooth design means there is for no hook up in your focuser.

SWAN 25mm Eyepiece


  • Internally baffled, All lenses' edges and internal spacers blackened, Fully multicoated
  • Model SWAN 25
  • Focal Length 25mm
  • Lens Structure (#Elements/#Groups) 5/3
  • Field of View 72
  • Eye Relief 21mm
  • Barrel 2"
  • Coating FMC
  • Parfocal Yes
  • Weight 330g

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