Eyepieces

The orthoscopic eyepiece from Kokusai Kohki is very well corrected and offers very high sharpness and ultimately high contrast. 

• Classical orthoscopic design 
• 42° apparent field of view
• Fully multi-coated 
• Bright image, very high sharpness, extreme contrast 
• Entire series parfocal.

The orthoscopic eyepiece from Kokusai Kohki is very well corrected and offers very high sharpness and ultimately high contrast. 

• Classical orthoscopic design 
• 42° apparent field of view
• Fully multi-coated 
• Bright image, very high sharpness, extreme contrast 
• Entire series parfocal.

The orthoscopic eyepiece from Kokusai Kohki is very well corrected and offers very high sharpness and ultimately high contrast. 

• Classical orthoscopic design 
• 42° apparent field of view
• Fully multi-coated 
• Bright image, very high sharpness, extreme contrast 
• Entire series parfocal.

The orthoscopic eyepiece from Kokusai Kohki is very well corrected and offers very high sharpness and ultimately high contrast. 

• Classical orthoscopic design 
• 42° apparent field of view
• Fully multi-coated 
• Bright image, very high sharpness, extreme contrast 
• Entire series parfocal.

• 80° field of view allows relaxed observations and a large field of view for overview.
• Extemely high edge sharpness due to Field Flattener lenses and high quality XD lenses provide an image free of chromatic aberration
• Ideal for digiscoping - large field of view minimizes vignetting even with large camera sensors or wide-angle smartphone lenses
• eye relief : 17 mm
• Eyepiece focal length 14 mm
• 2" telescope adapter with48 mm filter thread
• Focus position with reference Tele Vue 41 mm panoptic : 10 mm inwards
• Eyeglass wearer friendly
• 2 " plug adapter with M 48 filter thread
• Waterproof
• 10 years warrenty
  

• 80° field of view allows relaxed observations and a large field of view for overview.
• Extemely high edge sharpness due to Field Flattener lenses and high quality XD lenses provide an image free of chromatic aberration
• Ideal for digiscoping - large field of view minimizes vignetting even with large camera sensors or wide-angle smartphone lenses
• eye relief : 17 mm
• Eyepiece focal length through the 1.6 x extender 8.75 mm
• 2" telescope adapter with48 mm filter thread
• Focus position with reference Tele Vue 41 mm panoptic : 26 mm inwards
• Eyeglass wearer friendly
• 2 " plug adapter with 28.5mm filter thread
• Waterproof
• 10 years warrenty
  

• 80° field of view allows relaxed observations and a large field of view for overview.
• Extemely high edge sharpness due to Field Flattener lenses and high quality XD lenses provide an image free of chromatic aberration
• Ideal for digiscoping - large field of view minimizes vignetting even with large camera sensors or wide-angle smartphone lenses
• eye relief : 17 mm
• Eyepiece focal length through the 1.6 x extender 8.75 mm
• 2" telescope adapter with48 mm filter thread
• Focus position with reference Tele Vue 41 mm panoptic : 16 mm inwards
• Eyeglass wearer friendly
• 2 " plug adapter with M 48 filter thread
• Waterproof
• 10 years warrenty
  

This Masuyama premium planetary eyepiece from Japan offers the best contrast, improved color rendition and better sharpness at the edge.

• Focal length 10 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 12.5 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 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

This Masuyama premium planetary eyepiece from Japan offers the best contrast, improved color rendition and better sharpness at the edge.

• Focal length 5 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