Fujiyama 1.25" HD Ortho Eyepiece 25 mm - made in Japan
The orthoscopic eyepiece is very well corrected and offers very high sharpness and ultimately high contrast.
Classical orthoscopic design 42° apparent field of view Bright image, very high sharpness, extreme contrast
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Kokusai Kohki Fujiyama HD-OR 25 mm - orthoscopic 25 mm eyepiece
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 the Tokyo factory, and individually inspected by the manufacturer before shipping.
The classical orthoscopic eyepiece according to Abbe consists of a singlet eye lens and a cemented triplet as field lens. It is very well corrected and offers very high sharpness and ultimately high contrast. Colour fringes do not appear.
Named after the Japanese name for that sky reaching symbol of Japan, Mt. Fuji, the FUJIYAMA HD-ORs come standard with multicoatings on all four air to glass surfaces, giving them extended light throughput, and brighter images overall, as compared to our previous OR eyepiece lineup. And all lenses are edge blackened to reduce internal light scatter and reflections to an absolute minimum. (And, for the record, cemented lens surfaces are UNcoated).
The entire Fujiyama lineup is parfocal, accepts standard 1.25" filters, and comes with plastic eyepiece caps. The chrome barrels of the Fujiyama HD-ORs are straight up and down, and we have removed the helpful, but also often annoying, safety groove.
Solid construction, bright, clean and sharp views throughout a fully corrected 42 degree FOV, with sharp field stops, makes the Fujiyamas perfect for every type of viewing, and 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.
Design: | Classical orthoscopic eyepiece according to Abbe |
Focal length: | 25 mm |
Apparent field of view: | 42° |
Eye relief: | 22.2 mm |
Field stop diameter: | 17.4 mm |
Eye lens diameter: | 21 mm |
Coating: | Fully multi-coated |
Parfocal series: | Yes |
Lens edges: | Blackened |
Filter thread: | Standard 1.25 inch |
Safety groove: | No |
Weight: | Approx. 120 g |
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Reviews
Written by Olaf Delke-Lejeune
on 2022-06-10
"Am Ende, wenn es wirklich auf Detail ankommt und du dich darauf konzentrierst zu sehen, was du weißt, geht kein Weg am Ortho vorbei. Die langen von Fuji sind absolute Preis Leistungs Sieger und ergänzen die Reihe perfekt nach oben. Da lasse ich ein Televue mono im Vergleich zum Bino im Koffer"