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1.25” eyepiece recommendation for Z130 and 8se.

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16 replies to this topic

#1 stacpa17

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Posted 21 September 2021 - 09:10 PM

My present eyepieces listed in my signature have been purchased over the years for my 18” 4.5 dob. A few years ago I purchased a Nexstar 8se as a smaller grab and go scope. I have been using the 2” eyepieces in it. Purchased a Zhumell Z130 2 weeks ago as a quicker backyard grab and go. It only takes 1.25” eyepieces but have been using it with the supplied eyepieces and the Delos 8 which works well. Would like to, over time, pick up 1 or 2 1.25” eyepieces that will work with the 8se and the Z130. Just ordered the Panoptic 24mm which seems to be a good choice for low power for both scopes. The Nagler 31 always makes me uneasy in the 8se. A smarter man would just order a 2x Barlow for the Z130 and keep using the 2” eyepieces in the 8se and call it a day but getting a Delos 14mm is another thought for a medium power eyepiece that would work well  in both scopes. Would the Delos 14 or similar be a waste of monies or add to the viewing experience. I have bought and sold eyepieces over the years so there is little downside in the end.



#2 SeattleScott

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Posted 22 September 2021 - 04:28 PM

I think 24/68 to 14/72 is a reasonable jump. I suspect the Delos is as good as anything around that AFOV, and you already have one and presumably like it. Then stepping down to 8/72 makes sense also. Potentially you could go for tighter spacing like 24/17.3/12/8 instead, but now you have to buy another eyepiece.

13 Nagler could be an option to fill the gap also. Assuming you want to stick with TV (I get the impression you are partial to TV).

Scott

#3 Dave Mitsky

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Posted 22 September 2021 - 04:58 PM

I also agree that the 14mm Delos would be a good choice.  I don't own the 14mm but I do have a 17.3mm Delos and like it quite a bit.  In fact, I prefer the 17.3mm to my 19mm Panoptic, which at one time was my second favorite eyepiece.



#4 Tropobob

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Posted 23 September 2021 - 04:37 AM

A 13mm Nagler or a 15mm DeLite are also worthy of consideration.  Both are parfocal with the existing 8mm & 24mm TV EPs, whereas the 14mm Delos is not. 


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#5 rhetfield

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Posted 23 September 2021 - 11:17 AM

Consider getting a 1.5x/2x barlow for the zhumell.  The zhumell will give good planetary views at 130x-150x and can be pushed to 200x on the planets.  Splitting doubles can be done up to 250x and beyond with that scope if collimation is dialed in.

 

Add degree circles for quick navigation:

https://www.cloudyni...degree-circles/

 

Look to the AWB OneSky thread for ideas on tables and other things.  I think there is also a smaller Z130 thread.

https://www.cloudyni...ithout-borders/

 

Remember the point is to push it to its limits on those grab and go sessions.


Edited by rhetfield, 23 September 2021 - 03:36 PM.


#6 Dave Mitsky

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Posted 23 September 2021 - 01:37 PM

The 13mm Nagler was my favorite of the T6s that I've owned.  I sold it to partially finance the purchase of a 13mm Ethos.



#7 Frenchy

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Posted 23 September 2021 - 03:06 PM

A 14mm Delos will require a in travel adapter which is a 2" adapter. Its only the 14mm and 17.3mm of the series that need more in focus travel. Also doubt it would be worth the effort or money to put a 1.25" low profile focuser on a z130 for one eyepiece.


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#8 stacpa17

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Posted 23 September 2021 - 03:18 PM

The Panoptic 24 arrives in the mail Monday and I’ll try it in both scopes. That seems to be the easy purchase. Don’t want to go too crazy here as the the Z130 is a $200 scope and don’t want to buy $800 worth of eyepieces for it. The Delos 8 actually worked good in the Z130 so either a 2x Barlow or getting a 14mm Delos might be the answer for both scopes for a medium power eyepiece and I’ll continue using the Ethos 10 in the 8se. I like the eye relief of the Delos over the Naglers which I sold years ago to move to the Ethos. The Z130 is a good little scope to put on the backyard table, Very happy with the purchase. Hey, those degree circles are a great idea! 


Edited by stacpa17, 23 September 2021 - 03:47 PM.


#9 SeattleScott

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Posted 23 September 2021 - 03:52 PM

Note the mention above that apparently the Z130 needs a 2” in-travel adapter to use a 14 Delos. So that might not be especially practical. Also, a 1.25” 2x barlow is essentially guaranteed to vignette a 24 Panoptic unless it is a Powermate/telecentric. If you are going to vignette the Panoptic to 55 AFOV you might as well just buy a Plossl.

Sounds like you like more eye relief than the 13 Nagler.

So that leaves a 15 Delite or Powermate (if you don’t already have one), assuming you want to stay TV and don’t want especially heavy eyepieces (I mean you have the 10 Ethos already so if you were considering using Ethos with the Z130 you would already be set). Of course the 2x Powermate is 2” format so that doesn’t work either. The 2.5x is 1.25” but that gets you down under 10mm, not exactly splitting the difference between 24 and 8. I’m not seeing a good alternative to 15 Delite here given the constraints.

If you are open to other brands, there are other options that could provide good ER like Delite but more AFOV.

Scott

Edited by SeattleScott, 23 September 2021 - 04:02 PM.

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#10 BlueTrane2028

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Posted 23 September 2021 - 04:05 PM

*snip* Don’t want to go too crazy here as the the Z130 is a $200 scope and don’t want to buy $800 worth of eyepieces for it. *snip*

IMO, don't be wrapped up in the value of your eyepieces vs your telescope.  Good eyepieces will stick around in your possession a lot longer than your telescopes and there comes a point when you're used to nice stuff and just don't really want to go back.  I'm there now.  Have tons of Plossls and gold lines... I use my ES82s exclusively except for when I'm limited by a focuser as you are here.  My favorite eyepiece is the 30mm ES82, and I've modified telescopes to get them to use it before... telescopes worth less than the eyepiece in some cases.



#11 stacpa17

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Posted 23 September 2021 - 04:09 PM

The Z130 has a 1.25” focuser so the Ethos is out. Not understanding the physics of in-travel adaptor and the Delos 14 but the 15mm Delite is ok too. Just wanted to get a medium power eyepiece that would be appropriate for the 8se and the Z130. I am not against other brands than Televue. I just find they hold their value really well, never mind the optical quality. Appreciate your input.

 

Scott



#12 SteveG

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Posted 23 September 2021 - 06:31 PM

The Z130 has a 1.25” focuser so the Ethos is out. Not understanding the physics of in-travel adaptor and the Delos 14 but the 15mm Delite is ok too. Just wanted to get a medium power eyepiece that would be appropriate for the 8se and the Z130. I am not against other brands than Televue. I just find they hold their value really well, never mind the optical quality. Appreciate your input.

 

Scott

You should consider the Morpheus 12.5. Well corrected and ample eye relief. About 78 deg afov, and it feels like a long eye relief Nagler.



#13 SeattleScott

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Posted 24 September 2021 - 12:51 AM

You should consider the Morpheus 12.5. Well corrected and ample eye relief. About 78 deg afov, and it feels like a long eye relief Nagler.

I was going to suggest 14 Morpheus. Seems like better spacing. But yeah roughly 78 AFOV versus 62 for Delite.

The issue with in travel and Delos 14. The Delos 14 focuses further in than the other TV eyepieces. Reflectors have notorious short focus travel. The previous poster implied that the Delos 14 wouldn’t reach focus with the Z130. Personally I can’t confirm this. If you have a 2” focuser, you can get an in travel adapter for 1.25” eyepieces, but the Z130 doesn’t have a 2” focuser. So it sounds like the Delos won’t work, so I would shy away from it unless someone else chimes in and says it will work. If it will almost reach focus, you could just adjust the primary mirror collimation screws to raise the mirror and reach focus. You don’t want to go bananas doing that but if you just need an eighth of an inch or something, that is a trick that will work. Basically if the focuser doesn’t go down quite far enough to bring the eyepiece into focus, bring the mirror up.

Scott

#14 SeattleScott

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Posted 24 September 2021 - 12:54 AM

The Z130 has a 1.25” focuser so the Ethos is out. Not understanding the physics of in-travel adaptor and the Delos 14 but the 15mm Delite is ok too. Just wanted to get a medium power eyepiece that would be appropriate for the 8se and the Z130. I am not against other brands than Televue. I just find they hold their value really well, never mind the optical quality. Appreciate your input.

Scott

Now if I understand correctly the 10 Ethos is a 1.25” eyepiece. Granted maybe the flimsy focuser doesn’t handle the weight of an Ethos well? Or maybe you don’t want to mess with taking the 2” sleeve off when using Z130 and back on for other scopes?

Scott

#15 Phaenomena

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Posted 24 September 2021 - 01:32 AM

You should consider the Morpheus 12.5. Well corrected and ample eye relief. About 78 deg afov, and it feels like a long eye relief Nagler.


Have both this scope and the 12.5 Morpheus. They're great together.
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#16 stacpa17

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Posted 24 September 2021 - 03:13 PM

Ordered the Delite 15mm. Give up a little FOV but it is a smaller lighter eyepiece than the Delos or Morpheus and should work well. Actually called Televue and spoke to someone there who was quite helpful. Can’t go wrong with any of the choices and if I don’t like it there’s always CN classifieds. Thanks for all your input.


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#17 Dave Mitsky

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Posted 24 September 2021 - 03:18 PM

A 14mm Delos will require a in travel adapter which is a 2" adapter. Its only the 14mm and 17.3mm of the series that need more in focus travel. Also doubt it would be worth the effort or money to put a 1.25" low profile focuser on a z130 for one eyepiece.

That's good to know.


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