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.
Sep 22, 2018
KK Fujiyama Ortho 9mmPros: Cons: Comments:
I had an extended opportunity to compare this 9mm with the same focal length Takahashi Abbe ortho. I found them to be well matched and the difference is negligible. The eye relief and field of view are both on the small side by design and neither bother me at all. I found this KK eyepiece to be extremely sharp to the edges of the field, with great contrast and a neutral color rendering. I have 3 of these eyepieces from this series and hope that they make another run of them going forward. They are definitely worth the price and on par with some of the best.
This review was provided courtesy of AgenaAstro.com
Dick Gentry New Member
- Skill Level
- Time with Product
Nov 11, 2016
- User Notes:
- Review by Call me what you like of Dallas, Texas.
Gratified by the performance, surprised by the ease of usePros:
Sharp, high contrast, fine color transmissionCons: Comments:
Excellent eyepiece, adequate eye relief for ease of use, VERY sharp and high contrast, definite 5-star performer
This review was provided courtesy of AgenaAstro.comJun 16, 2014
Great planetary eyepiecePros:
Compact,Sharp,Strong Construction,Lightweight,Quality LensesCons:
Narrow field of view,Short eye reliefComments:
This is a great quality telescope eyepiece. It's great for planetary viewing and seeing detail on the moon. It has a great sharp view edge to edge with good contrast. I took away 1 star for the narrow 42 degree apparent field of view and the short 7.6mm eye relief. The 42 degree AFOV is how all Ortho's are designed and it may not be for everyone. I prefer the longer 10.4mm eye relief of the 12.5mm KK Fujiyama Ortho, which I also own.
This review was provided courtesy of AgenaAstro.comMar 3, 2014
Quality Lenses,Easy to Use,Strong Construction,LightweightCons: Comments:
Well constructed eyepiece and is as described by manufacturer. Observed Jupiter - superb with moons showing disks. Observed Trapezium and observed all companions (a - f). Observations made with FS 152 mm f/8 Takahashi.
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) 1.75" (44.5mm) Max Width 1.34" (34.0mm) End Caps 2 Eye Lens Diameter 0.33" (8.3mm) Eye Relief by Design 7.6mm Field Stop Diameter 6.3mm Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6) Focal Length 9mm 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