Hutech 5mm Orthoscopic Eyepiece - 1.25"

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Hutech 5mm Orthoscopic Eyepiece - 1.25"
Item # HU-K-OR05
  • Hutech Orthoscopic Eyepieces offer a high contrast, high light throughput view for planetary and solar observers.
  • Design offers approximately a 40º true field of view.
  • Broadband multi-coatings applied to each surface of Hutech Orthoscopic Eyepieces with less than 0.2% reflectivity at each air-to-glass surface.
  • Low scattering of light makes a huge difference for bright objects like the Sun (both in H-alpha and white light), Moon, and planets.


Hutech 5mm Orthoscopic Eyepiece

Absolutely the finest Broadband Multi-layer Coatings available have been applied to all surfaces. Reflectivity of less than 0.2% at each air-to-glass surface results in maximum contrast, light throughput, and freedom from ghost images. Or how about Superb Lens Polish? Hutech Orthoscopics are polished to a high standard for maximum clarity and contrast. A surprising number of premium commercial eyepieces suffer from roughness, excessive pits, or sleeks left in the lens surfaces. These tiny defects can hamper short focal length planetary eyepieces, where even the smallest imperfections scatter light and reduce contrast.

Hutech Orthoscopic Eyepiece Features...

  • Proper internal baffling and blackened lens edges for elimination of stray light reflections.
  • Chrome plated barrels are threaded for standard 1.25" filters.
  • High quality glass for maximum transmission and purest colors with no yellowing or selective coloration.
  • 40 degree true field of view.
  • Parfocal (slight refocusing may be needed)

Hutech Orthoscopics are the ideal choice for any critical observing that demands the highest contrast, resolution and light throughput. Naturally, observation of fine planetary detail benefits from the qualities of the Hutech Orthoscopic. Lunar and Solar H-Alpha and White-Light observers will find the low scatter indispensable in preventing the intense brightness from washing out subtle surface or limb details. Deep Sky observers will appreciate the contrast and high light throughput for observing faint nebula, double stars, galaxies, and stars at the limit of their equipment and skies.

Hutech Product Number: K-OR05

Additional Information

Additional Information

Manufacturer Hutech
Optical Design Orthoscopic
Barrel Size 1.25"
Eyepiece Field of View - Apparent 40º
Eyepiece Focal Length 5mm
Eyepiece Eye Relief 4.05mm
Eyepiece Manufacturer Series Borg/Hutech Orthoscopic

Customer Reviews 1 item(s)

5 stars for optical performance, I have compared this eyepiece against an Orion Epic 5.1mm and a combination of 2.5 Televue powermate with 13mm Nagler T6 (resulting 5.2mm and the Hutech 5mm shows clearer and sharper images.
It shows great detail on my Unitron 75 f/16, on a friend Televue 76 (using a 2.5 powermate,and even more detail on a friend TMB 80mm f/6 apo Signature series, all at 240X!.
This is a great eyepiece.
The only downside is the little tiny hole where you observe, but I guess that is the price you pay to get the sharpest view.
It may be the sharpest eyepiece under $300.
I think I will buy also the 6&7mm.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Alejandro Gastélum / (Posted on 7/13/2009)
Included Items

Included Items

  • Hutech 5mm Orthoscopic Eyepiece - 1.25"
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