Tele Vue Plossl 20mm Eyepiece (1.25")

BH #TEEAP20P • MFR #EAP-20.0
Tele Vue
Tele Vue Plossl 20mm Eyepiece (1.25")
Key Features
  • 20mm Focal Length
  • 50° Apparent Field of View
  • 1.25" Diameter Barrel
  • Ideal for Fast Focal Ratio OTAs
Engineered to Al Nagler's uncompromising standards but at an entry-level price, the long-focal length Tele Vue Plossl 20mm Eyepiece produces a relatively low magnification on most OTAs for both near and deep-sky observations.
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Tele Vue Plossl Overview

Engineered to Al Nagler's uncompromising standards but at an entry-level price, the long-focal length Tele Vue Plossl 20mm Eyepiece produces a relatively low magnification on most OTAs for both near and deep-sky observations.

It is made using diffraction-limiting high-index glass lenses in a 4-element/2-group configuration to keep light on-axis and reduce astigmatism and edge-aberrations across its entire 50° apparent field of view. Fully multi-coated optics, blackened lens elements, and anti-reflection threads complement the optical components to improve contrast and light transmission, while limiting its loss. Its generous 14mm eye relief allows users the room to back off slightly from the eyecup for a more comfortable viewing experience with a reduced risk of accidental contact with the eyepiece lens which can cause vibrations and interfere with views. Ideal for fast-focal ratio OTAs, the eyepiece features a standard 1.25" barrel to be compatible with the most popular size of focuser and accessories, with a convenient fold-down rubber eyecup. This model of the Plossl series is parfocal with all Tele Vue Group 'B' eyepieces, allowing you to change compatible eyepieces without having to refocus — saving time and limiting vibrations.

Compatible Parfocal Group 'B' Eyepieces

  • 8 - 32mm Plossl eyepieces
  • All DeLite eyepieces
  • 19 & 24mm Panoptic eyepieces
  • 3.5 - 12mm Delos eyepieces
  • 16mm Nagler 5 eyepiece
  • All 1.25" Nagler 6 series eyepieces

Tele Vue Plossl Specs

Focal Length20mm
Apparent Field of View50°
Eye Relief14.0 mm
Eyepiece Barrel Diameter1.25"
Field Stop Diameter17.1 mm
Dimensionsø: 1.3 x L: 2.1" / ø: 3.3 x L: 5.3 cm
Weight3 oz / 85 g
Packaging Info
Package Weight0.275 lb
Box Dimensions (LxWxH)2.9 x 2 x 2"
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YOUR RECENTLY VIEWED ITEMS

question

Could I use this with my Meade 125 etc?
Asked by: Anonymous
yes, no problem
Answered by: Joel K.
Date published: 2018-08-27

question

What I feel that needs to be better explained about eyepieces and focal lengths as in 6mm or 25mm is that the opening is tiny for 6 mm as compared with 25mm that is wider . The lower the focal length the difficult it gets to train your eye throughthe opening due to its tiny opening. My child experience with my first kid telescope that came with 6mm and 25mm eyepieces told me that 25mm is more enjoyable to use despite lower magnification than the higher magnifying 6mm which is so restrictive in the opening for my eye to keep peeking through as steadiily as I can. I think that a minimum of 10mm is acceptable to me or maybe 12mm. . Am I correct?
Asked by: Anonymous
yes, you are correct. if you get a plossil eyepiece (4 element) the higher magnification eyepieces will have a smaller opening. If you go to a 6, 8 element eyepiece you will be able to go to a higher magnification with a larger opening.
Answered by: Joel K.
Date published: 2018-08-27
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