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Your cart is empty.It has now been 20 years since Tele Vue designed the original 13mm Nagler eyepiece. From then on Tele Vue has always sought ways to obtain the largest possible true fields (i.e. longer focal length) while maintaining the basic Nagler concept; 82 degree apparent field with good correction to the edge. The previous Nagler versions were not conducive to scaling to longer focal lengths. A totally innovative design using four different exotic glass types (some larger than the 70mm Pronto objective!) in a 6 element configuration, opened the door to the largest true field possible in the Nagler eyepiece family. With fewer elements, Tele Vue also retained the high contrast achieved on the Radians and Nagler Type 4s. Although the sheer size and element shapes preclude using an "instadjust" eyeguard, the eye- relief is quite comfortable and the weight was actually kept below that of the 20mm Nagler Type 2! The true field is, however, more than 50% wider (or 2.35x the area). Tele Vue hopes the 31mm Nagler Type 5 gives you as much of a "spacewalk" jolt as the original 13mm Nagler did 20 years ago.
Leo
Reviewed in the United States on August 30, 2022
Although i've yet to use the Ethos, I have used a number of other Televue eyepieces and I have to say-after finally upgrading my diagonal on my Nexstar 8se to a 2 inch one that can use this bad boy it is well worth it.Absolutely incredible experience despite the eyepiece being VERY heavy. It's extremely comfterable to look through-some times i feel like I don't even need to use one eye to look through it the field of view is so large!It's the best eyepiece I've used on my telescope and what really shines in this particular piece are those large deep sky objects. If your looking to see DSO in their entirety, than this eyepiece is worth it. I never saw Andromeda look so good. With M81 & M82 you can actually get in one view with a breath taking view of the night sky surrounding them. The Double Cluster also looks amazing with both clusters visible in the 31MM. Well worth it for the buck. I'm excited to get more Naglers now! However, I would say if your looking for planets and globulars this isn't the right eyepiece for you-you may want to get the 8MM or 12-13MM Nagler instead-but open star clusters & galaxies look particular great in this one!
Roger Dier
Reviewed in the United States on February 11, 2020
My review is to the point: Nagler makes the best eyepieces in the world. This eyepiece makes stars look like pin heads-no distortion whatsoever. I’ve never seen stars as small and as sharp as through this eyepiece. Massively wide field, generous eye relief. If you think this is too expensive, then it is. But if you want the views of a lifetime, you won’t be disappointed.
J. Mckeown
Reviewed in the United States on August 18, 2018
If you're reading this, you know what it is. In my opinion it's two things: it's heavy and it's perfect. I am seriously considering counter weights on my 12" Meade LX 90. I can hear the drive straining. It's a monster. That's the heavy part and you already knew that.I needed a wide angle eyepiece. I have the Meade 56mm super plossl (which is definitely worth the $60) but quality is what you would expect ... But get one... In superb seeing, it will surprise you. I looked for months and finally settled on this. It was the perfect match of quality and price. I couldn't pay more than what I did here.First dark sky and... Yup!! This is the one!!! Razer sharp, deep contrast, super open view, great color, and a treat on your favorite nebulae and galaxies. Easily see the dust lanes and intricate details of both. Matched with the O3 or Deep Sky filter and you spend the night praying the sun never comes up. Mind you, this is under conditions that I would say are 7/10. Location is everything. I haven't used it in there light polluted area where I live and I'm not excited to.I have a YouTube video of the un-boxing if you want to see a decent rep of the size... I'm sure you have already... It's crazy big.I had crowds of people gather who had never looked thru a telescope before on both nights and I felt a sense that if your first look is this lens, you're going to be disappointed going forward. However, the quote of the night was, "dude, I'm going to remember this for the rest of my life."Mission: accomplished.Any questions, ask away.
Anton
Reviewed in the United States on April 4, 2010
I'll keep this review relatively short because I am not an expert in all things astronomy--nor am I an expert in accessories for telescopes.I just bought a 12" Dobsonian scope, and after being disappointed with the views from my stock eyepieces I began researching for better ones. The Tele Vue Nagler line was mentioned to me from several individuals who are much more experienced in astronomy and imaging than I am. I went with the 31mm because of the size of my scope's aperture. If you are reading this post and are new to astronomy as well, you will want to find out your scope's specs (such as aperture, focal length, eye relief etc.) and also what kind of observing you are planning to do BEFORE buying any eyepieces--particularly expensive eyepieces.So once more, I chose the 31mm because of my scope's large aperture (around 300mm) and my desire to stargaze. The 31mm is intended for wide-field use and not high-magnification observing of things like planets (you can purchase smaller eyepieces with higher magnification from the Nagler line as well if you wish--I bought the 7mm for example). With this eyepiece you will gain a much wider view of the cosmos through your eyepiece-- 82 degrees worth. Along with the increased spacing will be a view without distortion. In stock or cheaper eyepieces it's very easy to look away from the center point of your lens and find that many of the stars around the edges are skewed or distorted. This is simply not the case with the Nagler lens and after my very first glance in the tube, I could literally "see" what I paid for.The eyepiece is a monster--it weighs around 2 pounds and it makes a 12oz. soda can look like its offspring. This may pose a problem for users with smaller refracting scopes or even small dobs, meaning you will have to counter the balance of these types of scopes with weights. My 12" Dob seems to work rather well with the piece but I can credit this with my scope's bearings. Again do some research and find out exactly what size and type of lens you will need before purchasing one.I ordered through Amazon and the pieces arrived in perfect condition as they were obviously shipped by professionals who know their products well.All in all it's a very fine piece; it's rather expensive but in optics you generally "get what you pay for". But again for any newcomers there are many, many variables which will affect your viewing experiences, such as atmospheric conditions, weather, location, light pollution and limitations of your equipment. Again, get to know your fundamentals before buying a telescope online and picking up a few expensive eyepieces!
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