Tele Vue 17.0 Ethos (ETH-17.0) 16-20mm 76um that can accommodate a

76um that can accommodate a large well depth of 73ke

For astronomers in the Southern Hemisphere

485mm x 102mm x 175mm (19

It can achieve excellent color correction even with the magnification mounting to 300× in visual observation

Eyeguard Extender raises the eyeguard position by 8mm

Tele Vue 17.0 Ethos (ETH-17.0) 16-20mm 76um that can accommodate aThe 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. TeleVue is known for its in house eyepiece and telescope designs by Al Nagler; our latest eyepieces brings new meaning to the term "in house." The concept for this eyepiece series was proposed by TeleVue President David Nagler, with performance