Tele Vue Nagler Type 5 16 mm: focal length 16 mm, apparent field of view 82°, 1.25-inch thread, and eye relief 10 mm. Part number EN5-16.0.
CHF 468.00incl. Swiss VAT
Reference EN5-16.0
The Tele Vue Nagler Type 5 16 mm is a 16-mm astronomical eyepiece offering an apparent field of 82°. It mounts on a 1.25-inch barrel and has a 10-mm eye relief. This configuration is suitable for observing star clusters, compact deep-sky objects, and general-purpose observing, depending on your telescope’s focal length.
Nagler eyepieces offer an apparent field of view of 82°. The different types represent distinct design choices: compare the focal length, eye relief, thread type, and weight—not just the product family name.
| Manufacturer reference | EN5-16.0 |
|---|---|
| Family | Nagler 5 |
| Focal length | 16 mm |
| Apparent field | 82° |
| Flow | 1.25 inches |
| Eye Discharge | 10 mm |
| Field diaphragm | 22.1 mm |
| Weight | 0.44 lb / 7.1 oz |
What is the magnification with this eyepiece?
With a telescope that has a focal length of 1,000 mm, this eyepiece provides approximately 62× magnification. The magnification is calculated by dividing the telescope's focal length by that of the eyepiece.
Is it compatible with my telescope?
It uses a 1.25-inch mount. In a 2-inch eyepiece holder, a suitable adapter is required. The ability to focus also depends on the optical path of the accessories.
Can you observe things with glasses?
The advertised eye relief is 10 mm. Comfort when wearing glasses also depends on their shape and the position of the eye; trying them on is always better than relying on a universal guarantee.
Is the apparent field the field visible in the sky?
No. The apparent field of view of 82° describes the view through the eyepiece. The actual field of view depends on the telescope; the field stop of 22.1 mm is the value to use to calculate it.
Check the focus travel, the focus adjustment range, the maximum weight your setup can support, and the compatibility of filters or correctors. The product offered is a Tele Vue Nagler Type 5 16 mm eyepiece; the accessories listed are optional. The availability shown reflects our supplier’s status at the time of the last check and does not indicate a reserved quantity.
Features and Compatibility: Tele Vue EN5-16.0 Official Spec Sheet.
