Ethos 17mm 100° Eyepiece
Category: Eyepieces
Description
Introduced at the 2007 Northeast Astronomy Forum (NEAF), Tele Vue once again broadened the amateur astronomer's perspective on the universe with: 100° of pure TeleVue quality. The field area of this eyepiece is more than 50% larger than the 82° field of the Nagler eyepiece design. The Tele Vue Ethos is essentially multiple eyepieces, delivering the true field size of a longer focal length, narrower apparent field eyepiece with the benefits of higher power and darker sky background.
The 17mm ETHOS is an ideal complement to the 31mm Nagler Type-5. They are parfocal (both have focus locations about 3/8" above shoulder) and the 31mm Nagler Type-5 has exactly twice the true field area.
Specifications
| 17-mm | |
| Model # | ETH-17.0 |
| Focal Length (mm) | 17 |
| Barrel Size (in.) | 2" |
| Apparent Field of View (deg.) | 100 |
| Eye Relief (mm) | 15 |
| Weight (lb / oz) | 1.55 / 24.8 |
| Field Stop (mm) | 29.6 |
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