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21 Ethos with a tv85?

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#1 sipster

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Posted 05 December 2019 - 09:24 PM

Has anyone ever used a 21 ethos with a tv85  scope? I know it's a huge ep, but I'm thinking  about it. Might yield awesome views. I know  I could  never powermate  it with that scope, but my setup  handles a 3.7 ethos  fine and even a 13 with a powermate so.. why not ?  Any thoughts  or personal  experiences ?



#2 Spikey131

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Posted 05 December 2019 - 09:49 PM

No, but I do use an 20mm ES 100 with a TV 76.  I use a Balance Aid.

 

 

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#3 Jon Isaacs

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Posted 05 December 2019 - 10:09 PM

I use the 21mm Ethos in my WO 80 mm F/7 Megrez ll FD. It's a great view but there is the scopes field curvature...

 

Jon


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#4 Allan Wade

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Posted 06 December 2019 - 08:42 AM

The 21 Ethos is a great companion for the TV85. Under a dark sky the wide field view is stunning. Actually, doing side by side observing with my TV85 and TV76 using the 21 Ethos and 31 Nagler eventually lead me to sell the TV76. The field curvature in the TV76 was significant, while the TV85 handled it very well, and was much better balanced with the very heavy eyepieces. I've found the TV85 to be a really capable scope no matter what eyepiece you throw at it.

 

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#5 Bataleon

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Posted 06 December 2019 - 12:55 PM

I think you'll be fine if you have adequate mount and balance for it. Worth noting, this is one of the Tele Vue guys' favorite OTAs for testing eyepieces.

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#6 Aleko

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Posted 06 December 2019 - 01:03 PM

What Allan said. The TV-85 and 21 Ethos pair up nicely. 


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#7 Spikey131

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Posted 06 December 2019 - 02:06 PM

I accept the field curvature for the compactness of the TV 76.  

 

My setup fits in a Pelican waterproof case that rides in the bottom of a canoe.  Loons during the day and deep sky at night.

 

But if you don’t need the compactness of the TV 76, the 85 will give you more aperture and less field curvature.


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#8 25585

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Posted 06 December 2019 - 05:41 PM

I use ES92s with my TV85, see the refractor forum thread on balancing small scopes.



#9 MrRoberts

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Posted 06 December 2019 - 05:57 PM

My Esprit 80 loves all my Ethos ep's, 6,8,13,17

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#10 25585

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Posted 06 December 2019 - 08:55 PM

Nice setup! 



#11 sipster

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Posted 06 December 2019 - 10:46 PM

The 21 Ethos is a great companion for the TV85. Under a dark sky the wide field view is stunning. Actually, doing side by side observing with my TV85 and TV76 using the 21 Ethos and 31 Nagler eventually lead me to sell the TV76. The field curvature in the TV76 was significant, while the TV85 handled it very well, and was much better balanced with the very heavy eyepieces. I've found the TV85 to be a really capable scope no matter what eyepiece you throw at it.

 

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Awesome. That is my feelings with the tv85 too, but I wanted to hear it from someone who has used a 21 ethos with it. I hear it's a beast so wanted to be sure it's  practical. What kind of mount is that you  have?


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#12 Allan Wade

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Posted 07 December 2019 - 01:41 AM

That is my travel setup. It's a Desert Sky Astro DSV-M mount on a Gitzo carbon fibre tripod.



#13 junomike

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Posted 07 December 2019 - 07:56 AM

I found my SVR90T amazing with the 31T5 and 21E. 

No issues, quick G 'n' G,  and the views.......amazing.

 

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#14 Swamp Fox

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Posted 07 December 2019 - 09:20 AM

I use my 21mm Ethos and the 31mm Nagler with my 85mm and have no complaints.

 

-Mark




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