TeleVue Nagler Type 2 20mm

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TeleVue Nagler Type 2 20mm
Well I guess different people can interept things differently. A quote from his post "the main reason they exist is to satisfy the newest thing". I think they exist because people enjoy the views, not because they are big and expensive. I would prefer a smaller,lighter eyepiece also, but if that is the size its needs to be to perform like it does, I will not argue. Then the poster suggest that the afov of the naglers should be lessened to approximately 70 degrees, thats what panoptics, pentax xl's, and others are for. I am not attacking the poster, I just disagree. If televue decided to cut the afov, I would be disappointed, he would not be, thats what makes the world go around.

Richard Beasley

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TeleVue Nagler Type 2 20mm
Sounds reasonable to me Richard.

Since I'm here I may as well do a little review.

I have used the 20mm Nagler Type 2 and found that it had excellent edge correction and delivered very crisp and contrasty views (14" f/11 SCT). I have found that the newer designs (Type 4's) seem to give me more of that space walk feeling, although I have only used the 22mm Type 4 a couple times so this may be a premature conclusion.

In all I own or have used Naglers from the 7mm Type 1's to the 31mm type 5's and have enjoyed them all. I have really grown very found of my 12mm Type 4 and have posted a review there. I have also found that in my 10" f4.5 Newt, the Nagler have better edge correction than my Panoptics (eyepieces I also enjoy).

I give the eyepiece a 9 as there is little, if anything, that is "wrong" with its performance. Knocked off a point for it considerable weight and the above mentioned spacewalk issue. Overall, great EP.

Overall Rating: 9
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TeleVue Nagler Type 2 20mm
This thing is HUGE. As big and heavy as the 31mm Nagler. Lots of glass. You feel like you are getting what you paid for. May cause some problems for refractors on less balanced mounts. Great FOV and very sharp to the edge. Every bit as good as TV22N4. Will be a collectors ep like the TV11. Best ep in the FL.

Overall Rating: 10
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TeleVue Nagler Type 2 20mm
My first look through a Nagler was on a good night at a long-ago Stellafane, when Al Nagler was set up in the camping area, wow'ing many of us who had never before used his amazing new (new back then, that is) designs. What hooked me right away, of course, was the "spacewalk" view-- using a Nagler was like peering out the porthole of an imaginary space ship. Accustomed to the Kellners and Orthoscopics of the day, I'd never experienced anything remotely like it. The sensation pushed all the right buttons on a guy whose interest in astronomy had from the start included the fantasy of actually seeing the stars from space. I suspect that I wasn't unique. Maybe this partial realization of childhood dreams is a factor in the amateur community's continuing love affair with Nagler EP's and why so many of us spend seemingly outrageous sums on TeleVue glass.

At any rate, the Nagler 20 is undeniably a big, heavy grenade. It will probably unbalance your scope, even if you have a fairly large scope. If you don't already have a 2" focuser, you'll have to get one. This eyepiece is big enough so that it may require a case of its own. It will almost certainly cost you a bundle, and if you get a really early one, you'll probably wind up spending yet more to have it modified by TeleVue to accept thread-on 2" nebular filters (you'll want to do this, because this is a killer EP for extended nebulosities...)
The 20 will be worth every penny you spend on it, though, and you'll either never sell it or be sorry that you did, because this is one of the ultimate "spacewalk" eyepieces. Used with a good scope under decent skies, this Nagler delivers everything-- a huge, porthole-like field, pinpoint star images, sharpness to the edges of the field, freedom from internal reflections, and that indefinable quality common to excellent eyepieces, the feeling that the scope is "out of the way" and you're seeing the heavens with your own eyes. It's probably the closest many of us will ever get to that fantasy view from orbit. If you're seeking a 20mm and your blessings include a 2" focuser and some disposable income, this eyepiece won't disappoint.

Note: My Nagler 20 lives in a case made by Canon for a 100mm telephoto lens-- it fits very nicely.

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TeleVue Nagler Type 2 20mm
Seems to have clear views to the edge with pretty good brightness...Still in my opinion the flagship of the naglers...too bad that Al discontinued it...he ought to bring it back!

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TeleVue Nagler Type 2 20mm
I bought the Type 2 Naglers when they first came out. I have the 20, 16, and 12. This is the best of the three and it is probably the best eyepiece I have seen. Views are sharp across the field; fields are flat and color free. Moreover, and most important to me, there are no "kidney beans", namely dark zones as you move your eye. The eyepiece is heavy, but handles well in my TV-85. The eye relief is adequate for me (no eyeglasses.) I doubt that I will ever part with this fine piece of workmanship. This is a collector's item.

Overall Rating: 10
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TeleVue Nagler Type 2 20mm
Incredible views, broke my heart to sell it but it's just too heavy to be useable under most circumstances, which is why I only gave it an "8". Doesn't work in my TeleVue refractor because the tube doesn't balance even with the tube ring slid all the way back. Hard to use with my 14.5" dob because once you set enough weights to counter-balance this massive eyepiece, you can't switch eyepieces (to say, my Nagler 13) without losing your object because the tube goes swinging up towards the zenith once you pull out the 20mm. Rates a "10" for fabulous views, space-walk effect, and general glamour appeal. Difficulty of use knocks it to an "8" for me.

Overall Rating: 8
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TeleVue Nagler Type 2 20mm
This is by far the finest eyepiece I have ever used and Ive looked through alot. Its got the perfect magnification and image contrast along with the stunning fov. If I had only one eyepiece to have for the rest of my life, this would be the one ! The weight doesnt bother me at all. A 10 in every aspect !

Mike Leitch
www.ncweb.com/~galaxy/home/astropho.htm

Overall Rating: 10
Optics:10 Value:10
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TeleVue Nagler Type 2 20mm
Awesome. VERY contrasty, incredibly sharp image. Coupled with an OIII on a 16" dob we had incredible views of the Lagoon, Veil, Triffid, Swan and Helix nebula. Incredible value for money, purchased used, compared to the newer T4's/T5's. Tradeoff... the critter is HEAVY. On an SCT, I have 2 balance settings... this eyepiece's and everything else. On the dob, it's a 3 bungie cord eyepiece vs 1-2 for everything else. But I'm not reducing the score 'cuz people who buy this eyepiece probably know what they're getting into, and should be planning their set up accordingly.

Overall Rating: 10
Optics:10 Value:10
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TeleVue Nagler Type 2 20mm
Expensive, even used, but worth it if you must have one of the best. Compares very well to the rest of the older Nagler line (I haven't used any of the new ones yet) and is better for eye relief than the other type 2 Naglers. No obvious kidney bean effect or blackouts under the stars and very comfortable for most users who observe without glasses. You still must get your eye fairly close to the lens to see the entire field but this can be done with the eyecup in the up position, unlike the other type 2s. Contrast is excellent and stars are sharp across the entire huge field of view in most scopes. The only optical flaws seen were internal reflections (ghosts) on very bright objects and a bit of lateral color near the edge of the field. Depending on where you place the object in the field of view, these ghosts can be more or less obvious. With driven scopes, the object can be centered and the ghosts eliminated. They are less severe than in most other type 1 and 2 Naglers. Not a major problem, even on Jupiter (almost invisible on Saturn) and it is an enjoyable planetary eyepiece, especially with long focal length scopes. Really nice on clusters, nebulas and planetaries where the huge FOV and excellent resolution shine. I rate it a 9 overall because it's not quite perfect for all objects (what is?). Highly recommended.

Overall Rating: 9
Optics:9 Value:8
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TeleVue Nagler Type 2 20mm
I have recently purchased this EP to go with my 12,17,31mm Naglers.
I must say that I read all the reviews I could and tried to get a look through one before buying, but no one had one to view through!
So I purchased it based on all the comments of value and quality and I am not disappointed!
It came in pristine condition, with glass just like new! The fist time I used it was under poor conditions. First view was very impressive! It was bright and contrast was excellent. I was able to see even under poor conditions, individual stars in a cluster that the 17mm did not quite show. Stars were pinpoints even with upper level disturbances and moisture.
I really like this EP and compare it to the 31mm Type5. Not as big a view, but just as nice.
This is a definate must for any who want the best in their collection in my opinion.
I got mine for $260 including priority mail shipping! What a deal!
:^)

Overall Rating: 10
Optics:10 Value:10
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TeleVue Nagler Type 2 20mm
The EP that all others should be based off of for comparison! Best detail of all!!

Overall Rating: 10
Optics:10 Value:9
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TeleVue Nagler Type 2 20mm
Fanatastic eyepiece in a 14.5" reflector

Overall Rating: 10
Optics:10 Value:10
Weight: 5 (Veritable Vote)
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TeleVue Nagler Type 2 20mm
Optically very very good. Eye relief was about 12mm, which is a little tight for me, even without glasses, which I don't use when i'm observing. Extremely heavy though, which is why I ended up selling, its a shame too. Used in a 10" F/5,6 dob.

I got it on ebay for about $275,, which made it excellent for the price. i would have kept it forever had it not been for the weight.

Overall Rating: 8
Optics:8 Value:10
Weight: 5 (Veritable Vote)
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