Eyepieces
FEP-20-60 w/Case
Product Code: BDB805AA
Dedicated eyepiece with variable magnification for use with specific EDG series Fieldscopes. Delivers bright, clear images at 20-60x magnification when attached to an EDG Fieldscope model with an 85 mm objective lens, and at 16-48x magnification when attached to a model with a 65 mm objective lens. Features a bayonet-type mount with lock for quick and secure attachment to the Fieldscope. With a long eye-relief this zoom eyepiece is a great choice for viewing subjects from variable distances, even if you wear glasses.
• Bayonet mount with lock for easy attachment and release
• Fully multilayer-coated
• Waterproof up to 2m for 10 min., and fog-free — thanks to O-rings and nitrogen gas (body-and-eyepiece joint is water-resistant)
• FEP-20-60 featuring long eye relief of 18.4-16.5mm employs an aspherical lens to minimise image distortion
| Eye Relief (mm) | 18.4-16.5 |
| Weight (g) | 330 |
| Magnification x (Fieldscope 85) | 20-60 |
| Magnification x (Fieldscope 65) | 16-48 |
| Real field of view (degree) (Fieldscope 85) | 2.2-1.1 |
| Real field of view (degree) (Fieldscope 65) | 2.8-1.4 |
| Apparent field of view (degree) | 42-60 |
| Field of view at 1,000m*1 (m) (Fieldscope 85) | 38-19 |
| Field of view at 1,000m*1 (m) (Fieldscope 65) | 49-24 |
| Exit pupil (mm) (Fieldscope 85) | 4.3-1.4 |
| Exit pupil (mm) (Fieldscope 65) | 4.1-1.4 |
| Relative brightness (Fieldscope 85) | 18.5-2.0 |
| Relative brightness (Fieldscope 65) | 16.8-2.0 |
| Outer diameter x length (mm) | 63x99 |