Ethos and TEC140
Posted 12 April 2021 - 05:31 PM
Posted 12 April 2021 - 06:00 PM
I use the 21 Ethos a lot in my 130 f/7 Apo. It gives really good low power high contrast views on expansive objects like Andromeda, The Double Cluster, Sagittarius Star Cloud, Orion Nebula Complex, and much more. I can almost take in the full 100º in one glance, but I have to move my eyes just a little to see the edge of field. Speaking of the edge, all stars are in focus & pinpoint regardless of their location in the field of view.
Not an Ethos, but the 31T5 Nagler is a very good complement to the 21 Ethos. They're a good 1-2 punch when it comes to Deep Sky surfing and sweeping the Milky Way.
Posted 12 April 2021 - 06:12 PM
You'll want the 21E. And you'll likely also want either the 4.7or 3.7E at some point too because you'll probably want a close look at some results of your sweeping. But the 21, well that's pretty much a given.
- turtle86 and rkelley8493 like this
Posted 13 April 2021 - 04:33 PM
The 17E is amazing however the 21E has a better separation from your current 13E.
- John Huntley likes this
Posted 13 April 2021 - 04:47 PM
Another vote for the 21E. It gives wonderful low power views in my 130 AP GT and I'm sure it would do the same for a 140 TEC.
Eventually, you'll want a higher power Ethos as Dick suggests.
Edited by turtle86, 13 April 2021 - 04:48 PM.
- rkelley8493 likes this
Posted 13 April 2021 - 04:48 PM
I used most of the Ethos at one time or another in my TEC 140. For low power, I loved the 21 and for medium power I actually liked the 10mm better on some nights than the 13. I also used the 8, the 6, and the 4.7 - a lot! In fact, those are the six eyepieces I carried around for years.
These high quality optics go together very well. The only variables are the sky conditions (transparency and seeing).
- turtle86 likes this
Posted 13 April 2021 - 10:01 PM