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Your cart is empty.Celebrate the start of the International year of Astronomy 2009, the 400th anniversary of Galileo's first use of an astronomical telescope, by showing friends and neighbors the best of our wonderfull universe. The TeleVue philosophy (Ethos, if you will) has always been about inspiring spacewalk vistas by creating the finest "rich fieldin. refractors and wide angle eyepieces. We hope the introduction of these new Ethos models will further rekindle the appreciation of astronomy and support all the worthy goals of IYA 2009. It's been quite a challenge to develop new Ethos eyepieces to the same performace standards achieved by the 13mm and 8mm models, perhaps the most honored in history. We hope the increased field of the 17mm and increased power of the 6mm will open up new visual experienes that Galileo could hardly have imagined, from small refracotrs to the largest Dobsonians.
Frank E. Melgeorge
Reviewed in the United States on September 19, 2024
This arrived same day as my ZWO 80mm Apochromatic Quadruplet Refractor. Tested them together. First night out, was watching Saturnrise. 6mm eyepiece, 600mm focal length. A perfect 100x magnification setup. I seen Saturn many times, for the first time I saw Titan, the largest moon...... Just WOW!!!
JH
Reviewed in the United States on July 22, 2022
I use a pair of these on my APM 150 mm binoculars. I expected the Delos (with a narrower FOV) to perform better on my binoculars, but in practice, I experience less blackouts with the Ethos (with a wider FOV).
Vishal Kasliwal
Reviewed in the United States on October 14, 2019
This is a superb eyepiece! Optically close to perfect, this eyepiece shares much in common with it's 8mm sibling. This line of eyepieces allows you to similarly frame a DSO like a cluster or a galaxy at 2X the magnification that you'd get using a Plossl i.e. to frame a DSO the same way with a Plossl as this eyepiece, you'd have to use a 12mm Plossl. In the Ethos, the object would appear 2X as large. With sufficient aperture, you increase your chances of actually seeing the same DSO because even though the DSO is 4X fainter as compared to the 12mm Plossl, contrast is unchanged and at the large angle subtended by the object, your eye might succeed in detecting the object even if its undetectable with the 12mm Plossl in the same telescope. Look into the material presented in Roger Clark's Visual Astronomy of the Night Sky for a more detailed explanation of what I'm saying here...This eyepiece is moderately heavy - heavy enough to be just under the cusp of stressing standard focusers. The standard focuser in my XT8 Classic dob is able to hold focus with this eyepiece even when pointed close to the horizon, but I can tell that if it had been even slightly heavier, the focuser would have run into trouble. It may be advisable to upgrade focusers if you purchase this eyepiece.At 150X & 200X, this eyepiece and its 8mm sibling are my 'detail' eyepieces. These are moderately high magnifications and I find that from where I live, I am not atmosphere limited on most nights. With the huge 100-degree AFOV, these eyepieces yield a true FOV of 40 and 30 arcminutes respectively. These are superb FOV sizes for framing globulars and planetaries, especially from high-contrast dark skies. At the same time, these eyepieces are not short enough to show all the detail possible on the Moon and planets without a Barlow. While turbulence is usually evident with the 6mm Ethos, I find that I can routinely see more detail when I pair the 8mm Ethos with a 2X Barlow without running afoul of the atmosphere. On good nights, even the 6mm Ethos gets Barlowed by 2X to a total magnification of 400X.To get a sense of what these eyepieces are all about, consider that at 20 arcmin across, M13 stretches across 50 degrees of your vision through the 8mm eyepiece while in the 6mm it just about fills the area of FOV that you can view without peeking off to the side!I recommend pairing this eyepiece with its 8mm sibling, the 21 mm Ethos for very wide fields, and the 13 mm Ethos as the standard eyepiece.
Dr. Forrest M. Holly Jr.
Reviewed in the United States on August 16, 2016
Along with my 21 mm ETHOS eyepiece, this 6 mm ETHOS makes the two a pretty complete set for the viewing I do with a 12" Meade Lighbridge Dobsonian. I use the 6 mm with my 1 1/4" adapter ring, otherwise I run out of focus, but this is no problem at all. Both of these ETHOS eyepieces provide spectacular views, with a generous field of view. Transaction was easy and delivery in advance of what was promised.
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