Tele Vue 4x Powermate (2")

BH #TEPMT4201 • MFR #PMT-4201
Tele Vue
Tele Vue 4x Powermate (2")
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Tele Vue PMT-4201 Overview

Powermates are the highly-evolved answer to the Barlow lens design from Tele Vue.

While barlow lenses increase the eye relief of the eyepiece in use, they also reposition the exit pupil of long focal length eyepieces far from the designer's intended position. This can cause vignetting and image degradation.

Using four elements, the Powermates leave the exit pupil where it was intended to be, restoring the full viewing aperture and optical quality of long focal length eyepieces. Have the best of both worlds; the long eye relief of the longer focal length eyepieces, but with higher magnification!

Nearly parfocal with 2.00" diagonals, the 2.00" Powermates are threaded to accept 48mm filters and their performance is exemplary with every 1.25" & 2.00" eyepiece in the Tele Vue line.

Directly accepts all 2" eyepiece
Threaded for 48mm filters
Works well with diagonals, unlike many normal Barlow lenses
Accepts optional PTR-4201 SLR camera adapter (imaging w/o eyepiece)

Tele Vue PMT-4201 Specs

Weight1.20 lbs (545g)
Packaging Info
Package Weight1.485 lb
Box Dimensions (LxWxH)6.2 x 3.25 x 3"

Tele Vue PMT-4201 Reviews

Beautiful optical and mechanical lens

By Richard
Rated 5 out of 5
Date: 2021-10-27

The optical performance of this lens is excellent. The mechanical features are solid and high quality. This lens upholds the high quality reputation of Tele Vue.

Crisp views even at high magnifications

By Michael
Rated 5 out of 5
Date: 2018-07-23

I have tested the 4X Powermate with all of my eyepieces on my 12" focal length 2438mm telescope. Even when I exceeded the theorectical maximum magnification the views were good. I have also done some limited prime focus + 4X PM astrophotography of some planets, which was the primary reason I purchased the 4X Powermate. Image scale was what I hoped.

Top quality

By Peter
Rated 5 out of 5
Date: 2016-09-07

I cannot speak highly enough about this power mate. Brilliant with NO LOSS of image quality. Love this and a definite keeper in the ep case.

Whats a barlow ? Worth every penny !

By John R
Rated 5 out of 5
Date: 2015-06-03

I use mine when I'm using a camera at Prime Focus, it really brings the Moon in up close and in detail !

Typical High Quality

By SCstarman
Rated 5 out of 5
Date: 2015-05-14

I usually but a Tele Vue product and only look elsewhere if Al Nagler doesn't make what I want. Along with this Powermate I bought the Tele Vue T-ring adaptor made especially for it. With my Nikon attached the combo makes my 1000 mm APO refractor into a 4000 mm telephoto lens for shots of the planets and the Moon. The optics are superb and everything fits together nicely, The first night out I produced results better than was possible with film. When I refine my technique I expect to dramatically improve on what I already have.

Astrophotography Essential

By David
Rated 5 out of 5
Date: 2014-02-12

I use the 4X Powermate with my Celestron SCT 14 for Astrophotography of planets. I captured Jupiter, Mars, and the Moon (sections) with impressive clarity. I recommend purchasing the matched T-Adapter sold separately for use with your DSLR. I use this in conjunction with my Nikon D800 and the results are stunning. Good sharpness and detail with good magnification. Highly recommended.

Great Barlow alternative but more expensive

By Ray
Rated 5 out of 5
Date: 2021-06-09

Does just what it says on the tin - makes any eyepiece you have put out 4X the magnification. I can't see any degradation of the image quality when the Powermate is in place. Big and fairly expensive, but worth it in my opinion.

Tele Vue is always excellent.

By Michael
Rated 5 out of 5
Date: 2020-12-01

Works great, beautifully made. it's Tele Vue. Heavy, four elements. Great performance comes at a price in weight. My Vixen SXD2 GEM is a bit too wobbly for my astro-photo set up. The Powermate is excellent, but it contributes to my weight problem.

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