APM 18mm 65° Ultra Flat Field Eyepiece

Code: LS-apm-ufl18

Delivered with:

  • Eyepiece
  • Caps



In stock

In stock


Due to the Holiday Season, Some APM Telescopes Products and Accessories may be not be available for delivery until January 2021.

Contact Lunt Solar Systems directly for inquiries regarding shipping and delivery times on APM Telescopes Products and Accessories


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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