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Stephen S
super member
Reged: 08/21/07
Posts: 129
Loc: San Diego, CA
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I'm a relative newbie but I do appreciate good optics (an infliction from my terestrial photography interests). The 13mm Ethos is a special beast and I am VERY glad I added this to my collection. Very impressive on all fronts. It totally rocks in my C9.25  and holds up well in my AT80ED as well. This has become my main eyepiece.
That said, it sounds like I am one of the few individuals that decided to not get the 8mm Ethos. I love the wide views with the 13mm Ethos. However, my higher powered viewing is almost always focused on planets. As such, the wider view is of less value to me in this range. I went with a Pentax 7mm XW (replaced an 8mm Hyperion that really struggled in my AT80ED). I have been very impressed with the Pentax.
That said, if Televue were to come up with at 20+mm Ethos, my 24mm Meade UWA and perhaps even my 50mm Tak LE might be in trouble. 
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C9 1/4-SGT (XLT)
AT80ED
Vixen Porta Mount
50mm Takahashi LE
24mm Meade UWA
13mm Televue Ethos
7mm Pentax XW
3mm Smart Astronomy
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Starman1
Postmaster
Reged: 06/24/03
Posts: 10684
Loc: Los Angeles
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Stephen,
For me, the 13mm hits the magnification/exit pupil sweetspot, so it was definitely a no-brainer.
But the 8 was a question: It provides 228X in my 12.5". Was that a magnification I'd use a lot? So I looked at my usage of my 9T6 and discovered it was used a lot for planetary nebulae, double stars, globulars (especially the small faint ones), and individual small galaxies and galaxy groups (like the Hicksons), and planets. So would I use the 8mm in my scope or would it sit unused in the case?
Well, its first night out told me the answer:
Yes, it would get used.
In fact, it's replacing my 11, 9, and 7, and it does so well at high-resolution-on-axis work (like close doubles or planets), it just might replace my 5mm too. I am beginning to think I just don't need the high power the 5mm yields.
I could see details inside some planetaries that I couldn't see with the 5 (due to seeing differences at those powers), so why bother with the 5?
So if the next Ethos is a 5, would I get it? Probably not.
But was the 8mm a reasonable purchase? For the 12.5", yes.
It requires a lot of infocusing when used as a 1.25" eyepiece, though, and I *barely* (maybe 1/32") saw focus before the focuser bottomed out. Others may not be quite as lucky.
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Don Pensack
12.5" Truss Dob, 5" Maksutov
Sustaining Lifetime IDA member, TeleVue junkie
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Astro1956
member
Reged: 12/23/05
Posts: 79
Loc: NE, USA
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I highly recommend the 13 Ethos. I'm getting ready to get the 8mm Ethos also. By the way the 20mm T5 is also a great lens and one of my favorites.
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TV 102
Tele-Vue 60 Imaging System
TV 31mm T5
TV 26mm T5
TV 20mm T5
TV 16mm T5
TV 13mm T6
TV 11mm T6
TV 9mm T6
TV 7mm T6
TV 5mm T6
TV 3.5mm T6
TV 2.5mm T6
TV 2-4 Zoom Nagler
TV 13mm Ethos
TV 8mm Plossl
TV 11mm Plossl
TV 20mm Plossl
TV 55mm Plossl
TV 41mm Panoptic
Losmandy G11 Gemini Level 4
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FirstSight
Carpal Tunnel
Reged: 12/26/05
Posts: 2344
Loc: Raleigh, NC
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WOW...and I thought I was a hopeless Televue widefield EP junkie.
(31,26)T5-17T4-(13,11,9,7,5)T6-(13,8)E
TV Parcorr, TV 2" 2x Powermate, TV 1.25" 2.5x Powermate
Just got the 2" Powermate today at SE Camera, and said to Tony (one of the proprietors): "This is my last eyepiece purchase - I've got everything I could possibly need now". But as I turned to walk away, I noticed my toes had been crossed when I said it.
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Chris M., aka "First Sight"
Orion XT12i Dob with Moonlite CR-2 focuser
WO Megrez 90 refractor on UniStar Light mount
Nikon 10x50 Binoculars
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Lamb0
professor emeritus
Reged: 07/25/07
Posts: 582
Loc: Fairbury, Nebraska
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 I've barely glanced through the 13 Ethos, but quality time with the 8 Ethos in a 20" f/5 Obsession assures me the Ethoi are winners. The Ring Nebula @ 318X with the central star saying "Hello" was inspiring to say the least! My 5(4.9)-8SW needed at least 380~400X to see the central star, though it was more solid @ 518X than the Ethos. Neither the 8mm nor 5mm Hyperion had sufficient contrast/clarity to discriminate the central star at all! In the meantime the 20T5 is a keeper - even if I do eventually acquire a 13 Ethos. 
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"Have eyepiece - will travel!"
8" f/5 Dob w/2.14" sec in a 12" alum tube 'The Mortar' - w/PCorr 2° TFoV @ 36.5X ~70% illum *NICE*
Typical eyepieces: 32 Burg, 24 Pan, 20T5, 5-8 SW, Others ALL 2": Pcorr, 2X PwrMt, Ast H-b, Lum UHC + OIII
60mm $50 Walmart Special in training - aka "Backpack Observatory"
Minolta Activa 12x50 , Steiner 15X80
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Ben Ritchie
Lost in Space
Reged: 01/31/05
Posts: 4210
Loc: Bosham, UK
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I never thought i'd sell my 20T5, but it sold yesterday...
With my current setup it just didn't do anything that the 13E didn't do better, swapping between the two didn't feel like I gained any TFOV (it does, just didn't feel like it). The 20T5's a true great eyepiece IMHO, but TeleVue just raised the bar.
I see what y'all have been raving about now
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Astro-Physics 130EDT StarFire/TeleVue 60is/Astro-Physics 1200GTO/SBIG ST-4000XCM
80ED/HEQ5Pro, lots of other stuff...
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Lamb0
professor emeritus
Reged: 07/25/07
Posts: 582
Loc: Fairbury, Nebraska
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 YMMV, but there's times I'd want the extra 23% larger TFoV the 20T5 offers. Besides, the 4/3.48mm and 2/1.74mm exit pupils with 1.55/1.34° and .77/.67° fields the 20T5 produces in my scope are a sweet spot I'll not relinquish lightly!
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Joe Ogiba
Pooh-Bah
Reged: 02/14/02
Posts: 2920
Loc: NJ USA
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A month ago I wasn't planning on getting the 13mm Ethos because I was waiting for a 20mm version but today I received my 2nd 13mm Ethos for my Denk II and it's fantastic. 
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Pentax PF-80ED
Meade 102ED APO
Orion 120ST
Apex 127
CR150
C9.25
XT10
Zeiss 7x42 FL
Canon 10x42L IS WP
15x50 IS
12x36 IS II
Garrett Optical 28x110 HD-WP Signature Series
Oberwerk BT-80 45
Apogee RA-88-SA
Denk II Power x Switch binoviewer w/13mm Ethos, 20mm Pentax XW's, 20mm Widescan III's.
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csa/montana
Astro Ambassador
Reged: 05/14/05
Posts: 25568
Loc: montana
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Beautiful!!! Congratulations!
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Carol
AstroTech 16" Dob (Thanks ASTRONOMICS!)
AstroTech 66ED / Vixen 80MF/AstroTech Voyager
Masuyama's 7.5, 15, 25W, 35mm,
Tak LE 5mm
7mm Pentax XL, 10mm Pentax XW
14mm Meade 4000 UWA
22mm Pan, 35mm Pan
DreamCatcher Dobservatory, #2
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auriga
sage
Reged: 03/02/06
Posts: 369
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Quote:
My old set:
31/22/17/13/11/9/7/5 Naglers.
My new set:
31/22 Naglers, 13/8 Ethos, 5 Nagler.
From 8 eyepieces to 5.
And frankly, the 13 and 8 spend 95% of the time in the focuser. Those are incredible eyepieces.
Don, I have the 13E and the 8E as well and use them plus a finder eyepiece almost exclusively. I consider them great eyepieces.
However I have had one surprising experience, comparing the view of Jupiter through a 13E with a Celestron 8SE carefully collimated, versus the view of Jupiter, same time, same place, through the same scope, with a Denk Binoviewer and 10 and 20 MM Tele Vue plossles at a comparable magnification to that given by the 13E. The view was noticeable sharper to may eye and to the eye of the SE owner, with the Denk plus the plossls, than it was with the 13E.
On the other hand the 13E gave a wonderful view of M13 and of M27, through the SE.
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Starman1
Postmaster
Reged: 06/24/03
Posts: 10684
Loc: Los Angeles
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I can believe that. I spend about one half hour a year looking at planets, and about 200 looking at DSOs. Plossls are VERY good planetary eyepieces.
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Don Pensack
12.5" Truss Dob, 5" Maksutov
Sustaining Lifetime IDA member, TeleVue junkie
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new2view
member
Reged: 07/24/08
Posts: 40
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I just recieved the 8 Ethos from UPS. WOW thats a big rascal. Combine that with the Paracorr, I will need a block and tackle to hoist it around. LOL
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Scott Milligan
super member
Reged: 09/08/05
Posts: 112
Loc: MA
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Joe:
Re the last photo is series; which end do you look through?
Scott 
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Starman1
Postmaster
Reged: 06/24/03
Posts: 10684
Loc: Los Angeles
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Quote:
I just recieved the 8 Ethos from UPS. WOW thats a big rascal. Combine that with the Paracorr, I will need a block and tackle to hoist it around. LOL
Wait'll you see a 31 Nagler or 31mm Celestron Axiom LX in a Paracorr  --over 4lbs in the focuser(with the Axiom)!
In comparison, the 8mm Ethos is small and light.
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Don Pensack
12.5" Truss Dob, 5" Maksutov
Sustaining Lifetime IDA member, TeleVue junkie
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Lamb0
professor emeritus
Reged: 07/25/07
Posts: 582
Loc: Fairbury, Nebraska
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Quote:
Wait'll you see a 31 Nagler or 31mm Celestron Axiom LX in a Paracorr --over 4lbs in the focuser(with the Axiom)!
 Glassmongery, YES! 
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