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Tele Vue Nagler Type 1 13mm

4.0 (1 Reviews) Read Reviews Write Review
Brand Tele Vue
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Availability available

Product Info


1.25" 13mm Nagler Type 1 eyepiece


4.0 (Based on 1 Reviews) 100% of reviewers recommended this product.
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    1. humzebra

      humzebra New Member

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      User Notes:
      Dec 9, 2007

      4.0 Classic Performance from the 13mm Type I


      Excellent correction; Very good contrast; Ultra wide field


      Kidney bean blackout when off-axis


      This eyepiece has delivered excellent performance since 1980. The field is sharp from edge to edge even in fast newtonian reflectors. I use one in my 16" f/4.5 reflector with great success. The throughput is as good as any quality plossl. The contrast is very good and better than any standard eyepiece. The eye relief is a very usable 18mm, but the caveat is that there is a fair amount of spherical aberration of the exit pupil which means that a portion of the view blacks-out if your eye is off-axis. Some can't stand this, but many learn to accommodate and hold steady on-axis. This is the only drawback to this eyepiece's design.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No
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