Ethos

Focal Length
Apparent Field
Effective Field Stop
Eye Relief
Dioptrix Compatible
Barrel Size
Weight
Price
6mm 100° 10.4mm 15mm Yes 2"/1.25" 15.5oz $539
8mm 100° 13.9mm 15mm Yes 2"/1.25" 15.2oz $539
10mm 100° 36.2mm 15mm Yes 2"/1.25" 17.6oz $579
13mm 100° 22.3mm 15mm Yes 2"/1.25" 20.8oz $579
17mm 100° 29.6mm 15mm Yes 2" 24.8oz $719
21mm 100° 36.2mm 15mm Yes 2" 36.0oz $899

 

 

Sky & Telescope Review

A Triple-Digit Field of View
Tele Vue’s new 13-mm eyepiece is about to transform deep-sky observing.
________________________________________
S&T RATINGS
Optical Performance
Sensibly perfect. No meaningful improvements possible.
Just as the original 13-mm Nagler set a new standard for deep-sky observing in 1981, the Ethos sets a new standard today. Owning one will guarantee long lines at your telescope during any star party.
[I]f I were dropped on a desert island tomorrow with the 12-inch scope and only one eyepiece, I’d want it to be the Ethos.
Some of the views were simply stunning. The globular cluster Messier 13 in Hercules appeared as a sprawling sphere with thousands of resolved stars, many sweeping outward in sinuous arcs.
Even under the most critical examination, bright stars look sharp and round across the entire field.
The Ethos hasn’t sacrificed one bit of on-axis performance in achieving its 100° apparent field.
[T]he view of a starry sky with the Ethos and TV-NP127is is nothing short of breathtaking.
Besting the fields of other astronomical eyepieces by more than 20% in diameter and more than 50% in area, Ethos is a stunning optical achievement.

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Plössl Eyepieces - All eyepieces are fully multi-coated, include eyeguard, grip ring, caps, filter threads, and safety undercut.

Size
Apparent Field of View
# of Elements
Barrel Diameter
Eye Relief (mm)
Weight (lbs.)
Field Stop Diameter (mm)
Good for Bino Vue
Price
55mm
50°
4
2"
38
1.1
46.0
No
$229
40mm
43°
4
1.25"
28
0.4
27.0
Yes
$115
32mm
50°
4
1.25"
22
0.4
27.0
Yes
$115
25mm
50°
4
1.25"
17
0.3
21.2
Yes
$95
20mm
50°
4
1.25"
14
0.2
17.1
Yes
$95
15mm
50°
4
1.25"
10
0.2
12.6
Yes
$85
11mm
50°
4
1.25"
8
0.1
9.1
Yes
$85
8mm
50°
4
1.25"
6
0.1
6.5
Yes
$85

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Radian Eyepieces

Size
Apparent Field of View
# of Elements
Barrel Diameter
Eye Relief (mm)
Weight (lbs.)
Field Stop Diameter (mm)
Good for Bino Vue
Price
18mm
60°
6
1.25"
20
0.5
18.3
Yes
$229
14mm
60°
6
1.25"
20
0.5
14.4
Yes
$229
12mm
60°
6
1.25"
20
0.5
12.6
Yes
$229
10mm
60°
6
1.25"
20
0.5
10.5
Yes
$229
8mm
60°
6
1.25"
20
0.6
8.3
Yes
$229
6mm
60°
7
1.25"
20
0.8
6.3
Yes
$229
5mm
60°
7
1.25"
20
0.8
5.3
Yes
$229
4mm
60°
7
1.25"
20
0.8
4.2
Yes
$229
3mm
60°
7
1.25"
20
0.8
3.3
Yes
$229

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Panoptic Eyepieces

Size
Apparent Field of View
# of Elements
Barrel Diameter
Eye Relief (mm)
Weight (lbs.)
Field Stop Diameter (mm)
Good for Bino Vue
Price
41mm
68°
6
2"
27
2.1
46
--
$489
35mm
68°
6
2"
24
1.6
38.7
No
$379
27mm
68°
6
2"
19
1.0
30.5
No
$339
24mm
68°
6
1.25"
16
0.5
27.0
Yes
$309
19mm
68°
6
1.25"
13
0.4
21.3
Yes
$239

Panoptic/Barlow Interface
--
2
2"
--
--
--
--
$60

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Nagler Eyepieces

Size
Apparent Field of View
# of Elements
Barrel Diameter
Eye Relief (mm)
Weight (lbs.)
Field Stop Diameter (mm)
Good for Bino Vue
Price
31mm Type 5
82°
6
2"
19
2.2
42.0
No
$599

26mm Type 5
82°
6
2"
16
1.6
35.0
No
$569
22mm Type 4
82°
7
2"
19
1.5
31.1
No
$469
20mm Type 5
82°
6
2"
12
1.04
27.4
No
$439
17mm Type 4
82°
7
2"
17
1.6
24.3
No
$379
16mm Type 5
82°
6
1.25"
10
0.4
17.6
Yes
$329
13mm Type 6
82°
7
1.25"
12
0.4
17.6
Yes
$289
12mm Type 4
82°
6
1.25/2"
17
1.0
17.1
No
$349
11mm Type 6
82°
7
1.25"
12
.42
14.9
Yes
$289
9mm Type 6
82°
7
1.25"
12
0.4
12.4
Yes
$289
7mm Type 6
82°
7
1.25"
12
0.5
9.7
Yes
$289
5mm Type 6
82°
7
1.25"
12
0.5
7.0
Yes
$289
3.5mm Type 6
82°
7
1.25"
12
.53
4.8
Yes
$289
2.5mm Type 6
82°
7
1.25"
12
.54
3.4
Yes
$289

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Zoom Eyepieces

Size
Apparent Field of View
# of Elements
Barrel Diameter
Eye Relief (mm)
Weight (lbs.)
Field Stop Diameter (mm)
Good for Bino Vue
Price
Nagler 2-4mm
50°
5
1.25"
10
.36
1.7-3.3
Yes

$379
50°
5
1.25"
10
0.3
2.6-5.1
Yes

$369
8-24mm Click Stop Zoom for Dioptrix
55°- 40°
7
1.25"
15-20
0.5
7.6-16.7
No
$239

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All prices are subject to change without notice.