Orthoscopic Eyepieces
These eyepieces are based on the classic Abbe Orthoscopic (3 + 1 element) design.
The 3 cemented elements are hand-aligned by Japanese craftsmen.
Fully multicoated lenses provide clean, high-contrast images suitable
for optimum planetary and lunar viewing.
Technical Specifications
Focal length |
Baffle |
Eye Relief |
Effective lens diameter |
AFOV |
|---|---|---|---|---|
4mm |
2.65mm |
3.35mm |
3.5mm |
42° |
5mm |
3.40mm |
4.05mm |
4.0mm |
42° |
6mm |
4.20mm |
4.91mm |
5.0mm |
42° |
7mm |
4.87mm |
6.07mm |
5.7mm |
42° |
9mm |
6.30mm |
7.61mm |
7.3mm |
42° |
12.5mm |
9.20mm |
10.41mm |
10.0mm |
42° |
18mm |
12.50mm |
15.21mm |
15.0mm |
42° |
25mm |
17.48mm |
22.22mm |
20.0mm |
42° |
