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.
Ronald Zincone New Member
- Skill Level
- Time with Product
Oct 3, 2014
- User Notes:
- Review by Ronnie Z.
There is no eyepiece that is sharper.Pros:
Razor Sharp,Cool White Presentation,Maximum Light Throughput,Lightweight,Quality LensesCons:
43 Degree Fov,Short eye reliefComments:
Agena shipped the 4mm, 6mm and 25mm to my door in the MidWest in two days. These eye pieces are as sharp as money can buy. Their simple design means they have high light throughput due to fewer glass elements. I like the cool white, bright presentation. Solid high quality construction.
This review was provided courtesy of AgenaAstro.comJan 27, 2014
Thanks to KKPros:
Quality Lenses,Lightweight,Strong ConstructionCons: Comments:
A very well made Abbe. Construction quality (blackening, baffling etc.) is well above average. Optical quality is also fine with excellent clarity to the sharp field stop and very low scatter. I'm pleased to see the continued production of well executed Japanese orthos.
This review was provided courtesy of AgenaAstro.comSort by
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) 2.29" (58.2mm) Max Width 1.34" (34.0mm) End Caps 2 Eye Lens Diameter 0.83" (21mm) Eye Relief by Design 22.2mm Field Stop Diameter 17.4mm Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6) Focal Length 25mm Lens Elements 4 Lens Groups 2 Parfocal Yes Rubber Eye Guard No Blackened Lens Edges Yes Manufacturer Kokusai Kohki Eyepiece Focal Length 20.1mm - 30mm Eyepiece Field of View Up to 50 degrees Eyepiece Series KK Fujiyama HD Ortho Barrel Type Smooth sided