This review, “Tele Vue’s new eyepiece field tested,” appeared in the May 2008 issue of Astronomy magazine
When I first heard about Tele Vue Optics’ 13mm Ethos eyepiece with its 100° apparent field of view, I didn’t realize its significance or potential. Not until I placed the eyepiece in my 5-inch Tele Vue NP-127 f/5.2 refractor did I discover that, like Alice, I had gone through the looking glass and entered a new world of visual wonder. And that’s what I’d like to share with you: the awe and beauty of the Ethos experience. I found the view “as different as possible.”
A celestial window
My observing experience began with the magnitude 5.6 globular cluster M4 in the constellation Scorpius. To find it, I used my 22mm Tele Vue Panoptic eyepiece, which gives a true field of view of 2.2° and a magnification of 30x in the Tele Vue NP-127.
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