Tele Vue Plössl 11 mm: focal length 11 mm, apparent field of view 50°, 1.25-inch barrel, and 8 mm eye relief. Part number EAP-11.0.
CHF 138.00incl. Swiss VAT
Reference EAP-11.0
The 11 mm Plössl Eyepiece is an 11-mm astronomical eyepiece offering an apparent field of 50°. It mounts on a 1.25-inch barrel and has an 8-mm eye relief. This configuration is worth considering for star clusters, compact deep-sky objects, and general-purpose observing, depending on your instrument’s focal length.
The Plössl formula provides a way to design a range of magnifications without seeking an extreme apparent field of view. Pay particular attention to the eye relief: it varies with the focal length and determines the position of the eye.
| Manufacturer reference | EAP-11.0 |
|---|---|
| Family | Plössl |
| Focal length | 11 mm |
| Apparent field | 50° |
| Flow | 1.25 inches |
| Eye Discharge | 8 mm |
| Field diaphragm | 9.1 mm |
| Weight | 0.14 lb / 2.2 oz |
What is the magnification with this eyepiece?
With a telescope that has a focal length of 1,000 mm, this eyepiece provides approximately 91× magnification. 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 8 mm. Comfort when wearing glasses also depends on their shape and the position of the eye; trying them on is still better than relying on a universal guarantee.
Is the apparent field the field visible in the sky?
No. The apparent field of view of 50° describes the view through the eyepiece. The actual field of view depends on the telescope; the 9.1-mm field stop is the value to use to calculate it.
Check the focus travel, the focus range, the maximum weight your setup can support, and the compatibility of filters or correctors. The product offered is a Tele Vue Plössl 11 mm eyepiece; the accessories listed are optional. The availability listed reflects our supplier’s status at the time of the last check and does not indicate a reserved quantity.
Features and Compatibility: Tele Vue EAP-11.0 Official Product Sheet.
