Ethos
100° & 110° Apparent Field Eyepieces
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TeleVue.com: Eyepieces > Ethos > 17mm |
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 |
Compare to similar focal lengths |
“Decided to upgrade to Naglers & Ethos eyepieces. I enjoy viewing comets & deep sky objects and appreciate sharp images & wide FOV of Ethos.”
—T.A., IL
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.
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