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Kokusai Kohki 1.25" Fujiyama HD-OR Orthoscopic Eyepiece (Japan) - 9mm

4.7 (7 Reviews) Read Reviews Write Review
Brand Kokusai Kohki
Part Number HD-OR 9mm
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.

Reviews

4.7 (Based on 7 Reviews) 100% of reviewers recommended this product.
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    1. Guest

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      Review by David R.
      1538585507
      Oct 3, 2018

      5.0 Bought the 6, 9 and 12.5mm. GREAT!

      Pros:

      Cons:

      Comments:

      These are wonderful, crisp and clear, an EXCELLENT value at this price point. And Agena customer service is top rate!

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    2. Guest

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      Review by James J.
      1537633888
      Sep 22, 2018

      5.0 KK Fujiyama Ortho 9mm

      Pros:

      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.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    3. Guest

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      Review by Luis M.
      1500490002
      Jul 19, 2017

      5.0 9mm kk fujiyama hd ortho

      Pros:

      Cons:

      Comments:

      Execelent eyepiece for the price, compared to other high end brands I've tried in the past this hd ortho was just as good.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    4. Dick Gentry

      Dick Gentry New Member

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      Review by Call me what you like of Dallas, Texas.
      1478908800
      Nov 11, 2016

      5.0 Gratified by the performance, surprised by the ease of use

      Pros:

      Sharp, high contrast, fine color transmission

      Cons:

      Comments:

      Excellent eyepiece, adequate eye relief for ease of use, VERY sharp and high contrast, definite 5-star performer

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    5. Guest

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      Review by Stargazer of Cincinnati.
      1444435200
      Oct 9, 2015

      4.0 Good eyepiece

      Pros:

      Lightweight,Compact,Quality Lenses

      Cons:

      Comments:

      Great for planetary viewing. Couples well with 2x focal extender for those few nights that allow high magnification.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    6. Guest

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      Review by dude of The Hague, Netherlands.
      1402963200
      Jun 16, 2014

      4.0 Great planetary eyepiece

      Pros:

      Compact,Sharp,Strong Construction,Lightweight,Quality Lenses

      Cons:

      Narrow field of view,Short eye relief

      Comments:

      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.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    7. Guest

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      Review by John of Tucson.
      1393891200
      Mar 3, 2014

      5.0 Excellent eyepiece

      Pros:

      Quality Lenses,Easy to Use,Strong Construction,Lightweight

      Cons:

      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.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Specifications

      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