1. Final Announcement: We're Saying Goodbye to AstronomyConnect. Read Our Closing Notice.
Dismiss Notice
New Cookie Policy
On May 24, 2018, we published revised versions of our Terms and Rules and Cookie Policy. Your use of AstronomyConnect.com’s services is subject to these revised terms.

More Views

Kokusai Kohki 1.25" Fujiyama HD-OR Orthoscopic Eyepiece (Japan) - 7mm

No Reviews (0 Reviews) Read Reviews Write Review
Brand Kokusai Kohki
Part Number HD-OR 7mm
Availability available

Product Info

Manufacturer Description

Kokusai Kohki continues the tradition of offering the highest quality Japanese made Orthoscopic eyepieces with the introduction of their brand new FUJIYAMA HD-OR eyepiece lineup. Fujiyama HD-ORs are hand crafted at their Tokyo factory and individually inspected before shipping.

Named after the Japanese name for that sky reaching symbol of Japan - Mt. Fuji - the FUJIYAMA HD-ORs come standard with multicoatings on all air to glass surfaces (cemented lens surfaces are uncoated), giving them extended light throughput, and brighter images overall, as compared to Kokusai Kohki's previous volcano-top OR eyepiece lineup. And all lenses are edge blackened to reduce internal light scatter and reflections to an absolute minimum.

The entire Fujiyama lineup is parfocal, accepts standard 1.25" astronomy filters, and comes with plastic eyepiece caps. The chrome barrels of the Fujiyama HD-ORs are smooth-sided, and they have removed the helpful, but also often annoying, safety groove.

Solid construction, bright, clean and sharp views throughout a fully corrected 42 degree AFOV with sharp field stops makes the Fujiyamas perfect for every type of viewing. They are also an exellent match with high end apochromats for hard core planetary, lunar, solar and double star viewing.

Each eyepiece carries a one year Kokusai Kohki parts and labor warranty.


Not yet rated. Be the first to Write a Review


Apparent Field of View 42°
Barrel Size 1.25" (31.7mm)
Bolt Case Included Yes - Free Agena Eyepiece Container
Bolt Case Size Agena 37x60mm
Coatings Multi-Coated
Design Abbe Orthoscopic
Height (without Eye Guard) 1.64" (41.7mm)
Max Width 1.34" (34.0mm)
End Caps 2
Eye Lens Diameter 0.26" (6.5mm)
Eye Relief by Design 6.1mm
Field Stop Diameter 4.8mm
Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6)
Focal Length 7mm
Lens Elements 4
Lens Groups 2
Parfocal Yes
Rubber Eye Guard No
Blackened Lens Edges Yes
Manufacturer Kokusai Kohki
Eyepiece Focal Length 5.1mm - 10mm
Eyepiece Field of View Up to 50 degrees
Eyepiece Series KK Fujiyama HD Ortho
Barrel Type Smooth sided