Televue 17mm Ethos Eyepiece - 2 Inch
Sky & Telescope Hot Products 2010 WInner!
* The Televue 17mm Ethos Eyepiece provides a 100° apparent field for a true "spacewalk" view of the night sky.
* Distortion correction, high contrast and on-axis sharpness for wide field planetary viewing.
* Televue 17mm Ethos Eyepiece provides a generous 15mm of eye relief for comfortable observing.
* Accepts DIOPTRX eyesight astigmatism correctors.
* The Televue 17mm Ethos Eyepiece is a 2" barrel size and weighs 1.55 lbs (24.8 oz.).
* Dramatic mid-level magnification views combine with stunning wide field backgrounds.
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
|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|