Home :: OPTICAL ACCESSORIES :: Eyepieces (31.7mm, 1.25") :: Orthoscopic Eyepieces :: 7.7mm Abbe Orthoscopic Eyepiece

7.7mm Abbe Orthoscopic Eyepiece

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in In stock (2)
0.20 kg
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including VAT 20.00 % ( £6.60 )


7.7mm Abbe Orthoscopic Eyepiece from 365AstronomyLegendary orthoscopic design for the best possible high magnification planetary observations or projection photography. Recommended for telescopes with focal ration above f/5.

Focal length: 7.7mm
Apparent field of view: 48 degrees
Eye relief: 6.5mm
Fully multi coated optics
Full metal body
Standard 28.5mm filter thread
Optical design: 4 elements in two groups (1st group is a triplet plus 2nd group is a single lens)
Blackened internal surfaces of eyepiece barrel to eliminate internal light scattering.

Test results:
We have tested one of the 4.8mm orthoscopic eyepieces and compared with a simple 4mm Plossle of well known brand. Whilst the Plossl showed sharp image only in the center of the image, the ortho was beautifully crisp to the edge of the field of view all around.
This is one of the best purchases on the market and is well worth of the money.


This wonderful drawing of Mars was sent to us by Gabriel OKSA from the Slovak Academy of Sciences, Bratislava, Slovakia.
He's used this 7.7mm Abbe Orthoscopic eyepiece for his observation. He used a  Maksutov-Cassegrain 180/2700mm, f/15 at 351x magnification.
Courtesy of Gabriel Oksa

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