APM 18mm 65° Ultra Flat Field Eyepiece

Code: LS-apm-ufl18

Delivered with:

  • Eyepiece
  • Caps


In stock

In stock


APM Ultra Flat Field 18mm Eyepiece 65° FOV

The 1.25″ Ultra Flat Field 18mm Eyepiece features a high quality standard and a very compact design. Importantly, it is designed to remove the field curvature at the edge of your field of view.  Hence, this results in a flat, distortion-free image up to the edge of the visible viewing area.  Significantly, this is evident even in very fast telescopes.  Notably, the eyepiece has over – sized eyepiece lenses for the largest possible field of view. In addition, a 20mm eyerelief (also suitable for spectacle wearers) and foldable eye-rubber allow for comfortable viewing.  Significantly, all lenses (8 lenses in 5 groups) have a broad-band-multi-coating (FMC) and blackened lens edges. Finally, the plug-in sleeve is equipped with a thread for 1.25 “filters. All in all, the Flat Field 18mm Eyepiece will make a wonderful addition to your telescope accessories collection.

Specials about this eyepiece!

  • 1.25 “connector with integrated filter thread
  • Large upper field lens for comfortable optical insight
  • Suitable for eyeglasses users
  • Border Sharp Image
  • High quality multi-coating
  • Can be used universally


Type of eyepiece: Flat Field eyepiece
Focal length: 18 mm
Field of view: 65°
Eye relief: 20mm
EyegUard: Rubber foldable for eyeglass wearers
Lenses / groups: 8 / 5
Field stop: 23.4mm
Coating: FMC
Barrel size / Filter thread: 1 1/4″ with filtert hread
Diameter: Diameter eye lense 27mm
Height: 45mm
Weight: 206g
Connecting thread: Remove the eyepiece rubber M43X0.75-6h


Additional information

Weight 0.45 lbs
Dimensions 1.25 × 1.06 × 1.77 in


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