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 Eyepiece Specifications
From
www.televue.com

All Tele Vue eyepieces listed have proprietary tuned full multi-coatings, blackened lens edges, high index glasses, fold-down eyeguards, rubber grip rings, cover for the eyeguard, an undercut in the barrel for extra locking security and filter threads. All Tele Vue eyepiece lines are proprietary, in-house designs manufactured to our specifications and tolerances. Every eyepiece is individually tested at Tele Vue to ensure it meets our high optical and cosmetic standards.

Prod.
Code
1FL
(mm)
Eyepiece
Type
Barrel
(in.)
2E / G 3AF 4G 5ER
(mm)
Field
Stop
(mm)
6Eyepiece Dimensions (in.) Weight
(lb / oz)
Recommended
A B C D E F Bino Vue DIOPTRX
Digiscoping
 EPL-55.0  55  Plössl  2"  4 / 2  50
 38  46  3
 1.4  2.3
 1.16  1.13 / 18.1
 Y
 EPL-40.0  40  Plössl  1¼"  4 / 2  43
 28  27  1.8  0.9
 1.6
 0.7  0.41 / 6.6  Y  Y
 EPL-32.0  32  Plössl  1¼"  4 / 2  50  B  22  27  1.9  0.9
 1.6
 0.25  0.39 / 6.2  Y  Y
 EAP-25.0  25  Plössl  1¼"  4 / 2  50  B  17  21.2  1.6  0.9
 1.3
 0.25  0.27 / 4.3  Y
 EAP-20.0  20  Plössl  1¼"  4 / 2  50  B  14  17.1  1.2  0.9
 1.3
 0.25  0.19 / 3.0  Y
 EAP-15.0  15  Plössl  1¼"  4 / 2  50  B  10  12.6  0.9  0.9
 1.3
 0.25  0.16 / 2.6  Y
 EAP-11.0  11  Plössl  1¼"  4 / 2  50  B  8  9.1  0.5  0.9
 1.4
 0.25  0.14 / 2.2  Y
 EAP-08.0  8  Plössl  1¼"  4 / 2  50  B  6  6.5  0.4  0.9
 1.4
 0.25  0.11 / 1.8  Y
Prod.
Code
1FL
(mm)
Eyepiece
Type
Barrel
(in.)
2E / G 3AF 4G 5ER
(mm)
Field
Stop
(mm)

6
Eyepiece Dimensions (in.)
Weight
(lb / oz)
Recommended
A B C D E F Bino Vue DIOPTRX
Digiscoping
 ERD-18.0  18  Radian  1¼"  6 / 4  60  B  20  18.3  1.4  1.4
 1.8
 0.25  0.49 / 7.8  Y  Y
 ERD-14.0  14  Radian  1¼"  6 / 4  60  B  20  14.4  1.6  1.4
 1.8
 0.25  0.54 / 8.7  Y  Y
 ERD-12.0  12  Radian  1¼"  6 / 4  60  B  20  12.6  1.8  1.1
 1.8
 0.25  0.53 / 8.5  Y  Y
 ERD-10.0  10  Radian  1¼"  6 / 4  60  B  20  10.5  1.9  1.2
 1.8
 0.25  0.54 / 8.7  Y  Y
 ERD-08.0  8  Radian  1¼"  6 / 4  60  B  20  8.3  2.2  1.2
 1.8
 0.25  0.60 / 9.6  Y  Y
 ERD-06.0  6  Radian  1¼"  7 / 5  60  B  20  6.3  2.5  1.3
 1.8
 0.25  0.79 / 12.6  Y  Y
 ERD-05.0  5  Radian  1¼"  7 / 5  60  B  20  5.3  2.6  1.2
 1.8
 0.25  0.80 / 12.8  Y  Y
 ERD-04.0  4  Radian  1¼"  7 / 5  60  B  20  4.2  2.6  1
 1.8
 0.25  0.76 / 12.1  Y  Y
 ERD-03.0  3  Radian  1¼"  7 / 5  60  B  20  3.3  2.7  1.1
 1.8
 0.25  0.77 / 12.3  Y  Y
Prod.
Code
1FL
(mm)
Eyepiece
Type
Barrel
(in.)
2E / G 3AF 4G 5ER
(mm)
Field
Stop
(mm)

6
Eyepiece Dimensions (in.)
Weight
(lb / oz)
Recommended
A B C D E F Bino Vue DIOPTRX
Digiscoping
 EPO-41.0  41  Panoptic  2"  6 / 4  68  A  27  46  3.8
 1.1  3
 0.27  2.10 / 33.6
 Y
 EPO-35.0  35  Panoptic  2"  6 / 4  68  C  24  38.7  3.4
 1.2  2.6
 0.17  1.60 / 25.6
 Y
 EPO-27.0  27  Panoptic  2"  6 / 4  68  A  19  30.5  2.4
 1.2  2.1
 0.29  1.03 / 16.4
 Y
 EPO-24.0  24  Panoptic  1¼"  6 / 4  68  B  15  27  2.1  0.8
 1.9
 0.25  0.51 / 8.2  Y
 EPO-19.0  19  Panoptic  1¼"  6 / 4  68  B  13  21.3  1.7  0.9
 1.7
 0.25  0.41 / 6.6  Y
Prod.
Code
1FL
(mm)
Eyepiece
Type
Barrel
(in.)
2E / G 3AF 4G 5ER
(mm)
Field
Stop
(mm)

6
Eyepiece Dimensions (in.)
Weight
(lb / oz)
Recommended
A B C D E F Bino Vue DIOPTRX
Digiscoping
 EN5-31.0  31  Nagler 5  2"  6 / 4  82
 19  42  3.9
 1.5  3.3
 -0.38  2.20 / 35.2
 Y
 EN5-26.0  26  Nagler 5  2"  6 / 4  82
 16  35  3
 1.5  2.8
 -0.05  1.60 / 25.6
 Y
 EN4-22.0  22  Nagler 4  2"  7 / 5  82
 19  31.1  2.4
 1.5  2.4
 -0.29  1.50 / 24.0
 Y
 EN5-20.0  20  Nagler 5  2"  6 / 4  82  C  12  27.4  2.1
 1.3  2.1
 0.15  1.04 / 16.6

 EN4-17.0  17  Nagler 4  2"  7 / 5  82
 17  24.3  2.6
 1.5  2.4
 -0.03  1.60 / 25.6
 Y
 EN5-16.0  16  Nagler 5  1¼"  6 / 4  82  B  10  22.1  1.5  1.2
 1.7
 0.28  0.44 / 7.1  Y
 EN6-13.0  13  Nagler 6  1¼"  7 / 4  82  B  12  17.6  1.6  1.3
 1.6
 0.25  0.40 / 6.4  Y
 EN4-12.0  12  Nagler 4  2" & 1¼"  6 / 4  82
 17  17.1  2.3  1.8  1  2.4  1.2  0.78  1.01 / 16.2
 Y
 EN6-11.0  11  Nagler 6  1¼"  7 / 4  82  B  12  14.9  1.7  1.2
 1.6
 0.25  0.42 / 6.7  Y
 EN6-09.0  9  Nagler 6  1¼"  7 / 4  82  B  12  12.4  1.9  1.2
 1.6
 0.25  0.42 / 6.7  Y
 EN6-07.0  7  Nagler 6  1¼"  7 / 4  82  B  12  9.7  2.2  1.2
 1.6
 0.25  0.50 / 8.0  Y
 EN6-05.0  5  Nagler 6  1¼"  7 / 4  82  B  12  7  2.1  1.2
 1.6
 0.25  0.49 / 7.9  Y
 EN6-03.5  3.5  Nagler 6  1¼"  7 / 4  82  B  12  4.8  2.2  1.2
 1.6
 0.25  0.53 / 8.5  Y
 EN6-02.5  2.5  Nagler 6  1¼"  7 / 4  82  B  12  3.4  2.3  1.2
 1.6
 0.25  0.54 / 8.7  Y
Prod.
Code
1FL
(mm)
Eyepiece
Type
Barrel
(in.)
2E / G 3AF 4G 5ER
(mm)
Field
Stop
(mm)

6
Eyepiece Dimensions (in.)
Weight
(lb / oz)
Recommended
A B C D E F Bino Vue DIOPTRX
Digiscoping
 ETH-21.0  21  Ethos  2"   /   100
 15  36.2  4.3
 1.62  2.95
 -0.38  2.25 / 36.0
 Y
 ETH-17.0  17  Ethos  2"   /   100
 15  29.6  4.5
 1.4  2.4
 -0.39  1.55 / 24.8
 Y
 ETH-13.0  13  Ethos  2" & 1¼"   /   100
 15  22.3  4  1.6  1.1  2.5  1.1  0.27  1.30 / 20.8  Y  Y
 ETH-10.0  10  Ethos  2" & 1¼"   /   100
 15  17.7  3.8  1.6  1.1  2.3  1.1  0.27  1.10 / 17.6  Y  Y
 ETH-08.0  8  Ethos  2" & 1¼"   /   100
 15  13.9  3.3  1.7  0.94  2.1  1.2  0.7  0.95 / 15.2  Y  Y
 ETH-06.0  6  Ethos  2" & 1¼"   /   100
 15  10.4  3.5  1.5  0.94  2.1  1.1  0.7  0.97 / 15.5  Y  Y
 ETH-03.7  3.7  Ethos  2" & 1¼"   /   110
 15  7.04  5  1.1
 2.2
 0.25  1.10 / 17.6

Prod.
Code
1FL
(mm)
Eyepiece
Type
Barrel
(in.)
2E / G 3AF 4G 5ER
(mm)
Field
Stop
(mm)

6
Eyepiece Dimensions (in.)
Weight
(lb / oz)
Recommended
A B C D E F Bino Vue DIOPTRX
Digiscoping
 ENZ-0204  4-2  Nagler Zoom  1¼"  5 / 3  50  B  10  3.3-1.7  0.9  1.6
 1.7
 0.25  0.36 / 5.7  Y
 ENZ-0306  6-3  Nagler Zoom  1¼"  5 / 3  50  B  10  5.1-2.6  0.7  1.6
 1.7
 0.25  0.33 / 5.3  Y


Table Notes

1FL: Focal Length
2E / G: # Lens Elements / # Groups
3AF: Apparent Field of View
4G: Parfocal Group, eyepieces with the same letter are approximately parfocal -- require little (if any) refocusing when used together.
5ER: Eye Relief
6Eyepiece Dimensions: see diagram
A: Height of barrel above reference surface
B: Height of 1¼" barrel
C: Height of 2" barrel
D: Diameter of black barrel
E: Depth of 1¼" barrel
F: Approx. location of field stop
(negative number is above reference surface)

Tele Vue Eyepiece Notes

  • All Nagler and Radian eyepieces have internal focal planes. Field stop diameters and locations are "effective". Radian and Nagler type-4 eyepieces have "Instajust Eyeguards," and "pupil guide" accessory.

  • The 55mm Plössl and 41mm Panoptic eyepieces have an adjustable height (removable) eyeguard.

  • Also available: 2X and 3X parfocal 1¼" Barlows; parfocal 2.5x and 5x 1¼" Powermates; 2X Big Barlow, 2x and 4x Powermates for 2" focusers. Use Paracorr (1.15X) to correct fast parabolic "Dob/Newts", dramatically sharpens field to take full advantage of Tele Vue eyepiece capabilities.

  • All dual barrel eyepieces work equally well in 1¼" or 2" focusers.

Discontinued Eyepiece Archive

For your convenience this table lists discontinued eyepiece field stops.

 

Prod.
Code
Eyepiece Field
Stop
(mm)
ENA-04.8 4.8 Nagler 6.6
ENA-07.0 7 Nagler 9.4
ENA-09.0 9 Nagler 12.3
ENA-11.0 11 Nagler 14.9
ENA-13.0 13 Nagler 17.8
EN2-12.0 12 Nagler 2 16.4
EN2-16.0 16 Nagler 2 21.9
EN2-20.0 20 Nagler 2 27.4
EWF-15.0 15 Wide Field 15.4
EWF-19.0 19 Wide Field 19.6
EWF-24.0 24 Wide Field 24.7
EWF-32.0 32 Wide Field 33
EWF-40.0 40 Wide Field 41.2
EPO-15.0 15 Panoptic 17.1
EPO-22.0 22 Panoptic 25
EPL-07.4 7.4 Plössl 6.2
EPL-10.5 10.5 Plössl 8.7
EPL-13.0 13 Plössl 10.8
EPL-17.0 17 Plössl 14.3
EPL-21.0 21 Plössl 18
EPL-26.0 26 Plössl 22.1



 

 

 

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