Eyepieces
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Eyepieces
The last link in the optical path are the eyepieces. They are available for special purposes or for universal use. A good eyepiece is just as important as good primary optics.
This Masuyama premium planetary eyepiece from Japan offers the best contrast, improved color rendition and better sharpness at the edge.
- Focal length 15 mm
- Apparent field of view 53°
- Rubber eyecup for comfortable support of the eye or glasses
- 1.25" barrel without locking groove, with filter thread
- 5 elements in 3 groups
- Latest lenses and multi-layer coating technology
- Developed and manufactured by Ohi Kohki Co. in Japan
- Made in Japan
This Masuyama premium planetary eyepiece from Japan offers the best contrast, improved color rendition and better sharpness at the edge.
- Focal length 20 mm
- Apparent field of view 53°
- Rubber eyecup for comfortable support of the eye or glasses
- 1.25" barrel without locking groove, with filter thread
- 5 elements in 3 groups
- Latest lenses and multi-layer coating technology
- Developed and manufactured by Ohi Kohki Co. in Japan
- Made in Japan
This Masuyama premium planetary eyepiece from Japan offers the best contrast, improved color rendition and better sharpness at the edge.
- Focal length 25 mm
- Apparent field of view 53°
- Rubber eyecup for comfortable support of the eye or glasses
- 1.25" barrel without locking groove, with filter thread
- 5 elements in 3 groups
- Latest lenses and multi-layer coating technology
- Developed and manufactured by Ohi Kohki Co. in Japan
- Made in Japan
This Masuyama premium planetary eyepiece from Japan offers the best contrast, improved color rendition and better sharpness at the edge.
- Focal length 30 mm
- Apparent field of view 53°
- Rubber eyecup for comfortable support of the eye or glasses
- 1.25" barrel without locking groove, with filter thread
- 5 elements in 3 groups
- Latest lenses and multi-layer coating technology
- Developed and manufactured by Ohi Kohki Co. in Japan
- Made in Japan
- 4-lens Plössl type with ED lenses
- Extremely low chromatic aberration
- 48° field of view
- Extremely sharp image
- Transmission >99%
Sep 30 2025
Sky-Watcher presents the new Emerald 22mm eyepiece, designed for astronomers who prefer high contrast, a large field of view and maximum clarity. It features a 7-lens premium system....
- 22 mm focal length
- 82° apparent field of view
- Broadband anti-reflective coating and blackened lens edges for a bright, high-contrast image without reflections
- 18 mm eye relief is well suited for spectacle wearers
- Soft rubber eyecup for comfortable observation
- Thread for 2" filters
Oct 15 2025
Masuyama premium eyepieces from Japan offer best contrast, improved color rendition and better sharpness at the edge.
- Focal length 10 mm
- Apparent field of view 85°
- Rubber eyecup for comfortable support of the eye or glasses
- 1.25" barrel without safety groove with filter thread
- 5-element design
- Latest glass types and multi-layer coating technology
- Made in Japan
