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TeleVue 22mm Nagler Type 4

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TeleVue 22mm Nagler Type 4

4.7 out of 5 stars
7 customer reviews
Nagler Type-4 Eyepieces
  

Applying the experience of the Radian development to the 82° Nagler series, yielded more contrast, reduced pincushion, more true field, longer eye-relief, and fewer elements. With added eye-relief, the click-stop Instadjust eyeguard helps maintain proper eye distance and centration.
  

For deep sky viewing, the comfort, clarity and contrast gets us closer to our "spacewalk" viewing goal.
  

Why Are There 3 Types of Naglers?
  

To achieve the full magnification range over 82° apparent field of view requires two types: Nagler Type-5 with focal lengths of 31, 26, 20, 16mm and Nagler Type-6 with focal lengths of 13, 11, 9, 7, 5, 3.5, 2.5mm.
  

The Type-5 permits the largest true field possible (31mm has 42mm field stop), while the shorter focal length Type-6 models are parfocal, with similiar size and weight and all with a comfortable 12mm eye relief.
  

The Type-4 models feature about 18mm of eye relief and with the "instajust" eyeguard are best for eyeglass wearers or Dioptrx users in their 22, 17, 12mm focal length range.
  

22-mm
Model # EN4-22.0
Focal Length (mm) 22
Barrel Size (in.) 2"
Apparent Field of View (deg.) 82
Eye Relief (mm) 19
Weight (lb / oz) 1.50 / 24.0
Field Stop (mm) 31.1
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4.7 out of 5 stars
5
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4
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3
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Most Helpful Customer Reviews

22 Nagler

By Darren Drake on October, 17th 2009

This is simply the best eyepiece in it`s focal length range. The edge correction is very good if used with a paracorr on a fast newtonian scope. Eye relief is fantastic especially considering the field of view. Some laterial color but no pincushion distortion. Intadjust is a plus in my opinion

Hold Your Head Still

By Kimball Corson on October, 17th 2009

This lens is a ten, but only for those who can hold their head still to avoid what for me is a truly minor black out problem that a few others find isimpossible. Must try it first. Great contrast, resolution, and apparent sharpness.

Top of the line!!

By David Landreth on October, 17th 2009

This is by far my most used eyepiece! crisp clear pinpoint stars across the fov in a 8 f10 scope! i seem to have to leave this eyepiece out in the air as i do my scope to get it to adjust to the outside temperature before i can get the very best from this eyepiece! which is absolutly no problem to me. ive read on other reviews that this eyepiece is not very sharp, hogwash!!! let it adjust to the outside temperature for a 1/2 hour or longer & then, take in the most breathtaking views you probably have ever seen. this is one of tv,s truley great eyepieces!! dont pass this one up!!

22 Nagler T4

By clyde crewey on October, 17th 2009

A simply amazing eyepiece. Huge, bright FOV with pinpoint star images to the edge. Also unbelievable for daytime nature watching. I like the Instajust.

A true workhorse eyepiece

By Justin Morgan on October, 17th 2009

The awesome 22mm Nagler T4 is one of my most-used eyepieces. I use it with my Takahashi FS-128 refractor (f/8.1) every time its under the stars. The 1.7 degree true field (over 20 percent larger than the 22mm Panoptic!) at 47x provide awesome sweeping views for objects such as the Double Cluster and many others. As a bonus, its tack-sharp from edge to edge at f/8.1. The 19mm of eye relief provides hours of comfortable viewing. I have seen some fleeting kidneybeaning, but only when my eye is out of position, so this is a very minimal annoyance. The only thing that occasionally bothers me is the Instadjust--its fairly loose, and sometimes when I pick up the EP it feels like its falling out of my hand (due the to the Instadjust adjusting itself). But this too is a very minor complaint, and other than that I really like Instadjust. Overall, Id give the 22mm Nagler T4 a 10 out of 10.

A mid-range Wonder!

By James A. Edwards on October, 17th 2009

Having used a number of the TV Naglers, my first impression with this eyepiece was through a friends C14...My previous 20mm range eyepiece was TVs original T4 20mm Nagler which has set the benchmark for mid-range power eyepieces...Having used the 22mm Nagler for DS objects or in certian instances for planetary use, with 2 of my latest scopes ( a Mewlon 250 and more recently my Meade LX200 16 sct )this eyepiece gave me incredable views, a must have for any serious astronomer...I rate this eyepiece a pure 10, a mid-range wonder!

22 Nagler

By Richard Spina on October, 17th 2009

I had hoped for a lot better results with this eyepiece. It is not perfectly sharp out to the edges in either my fast (f/5.4) apo or a friends f/4.1 reflector. We did a number of side by side tests, over several sessions, and the sharpness in the outer 50% of the field is noticeably poorer than the 20 Nagler. I had hoped for better, since it is easier to use (eye relief and size) than the 20. The 22 did work fine in my f/15 Mak (almost all eyepieces are perfectly sharp in this scope). I also do not care for the instadjust.

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