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Equipment Discussions >> Eyepieces

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Scanning4Comets
Markus
*****

Reged: 12/26/04

Loc: Ontario, Canada
30mm ES 82 Vs 34mm ES SWA
      #5581702 - 12/20/12 11:49 PM

30mm ES 82 Vs 34mm ES SWA:

Which would be better in a 10" F/4.7 reflector? I have some nice glass in my collection, but I think my 38mm Orion Q70 needs to go. I'd like to replace it with something nicer edge wise. I would mostly use the EP as a finder, but sometimes use it to frame a few targets.

I had the 28mm Meade 5000 SWA, and it was indeed a nice EP, but I wanted to maximize my field size so I can find targets easier when star-hopping, so I picked up the Orion 38mm Q70. There are lots to like about this EP like easy eye positioning, and a nice, sharp field stop, but edge aberrations like astigmatism are quite evident in this EP.

Name your poison !!!! Which would best of these two? I haven't got enough for a 31mm Nagler, or I'd be all over that like a wet t-shirt! I'm also open to others as long as I don't have to take out a mortgage to buy it, LOL!


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maroubra_boy
Vendor - Gondwana Telescopes


Reged: 09/08/09

Loc: Sydney, Australia
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: Scanning4Comets]
      #5581846 - 12/21/12 03:28 AM

I can only write about the Meade 34mm SWA. I've used mine in my 17.5" f/4.5 & 8" f/4 dobbies. It is a fine performer in both scopes. No field curvature noticed, I couldm't make out any pincushion either. Coma, well of cause it's there as I don't use a coma corrector. But astigmatism is very well controlled. A little is noticeable, but at the very edge. These fast scope's are unforgiving on astigmatism, and I am very pleasantly surprised how it was controlled.

The only thing I'd say is a 34mm gives a large exit pupil. I am not too bothered by this, so, like you ilike to get as wide a FOV as I can get, but there is a slight trade off in exit pupil. Oh, and it is a big sucker at 785g, something like 1.5lb.

If exit pupil isn't a major concern, even consider the Baader Hyperion Aspheric 36mm. It's AFOV is 72*. Astigmatism is a little more prominent, but we are asking a lot from an EP at these focal ratios. It is also considerably lighter than the Meade 34mm!

I have both, and an trying to decide on which to keep. I may keep the 36mm for my 80mm f/5 refractor as it gives me a massive 6.5* TFOV! and the 34mm for my dobbies. I dunno

Edited by maroubra_boy (12/21/12 07:45 AM)


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aa5te
Genial Procrastinator
*****

Reged: 08/30/08

Loc: Clinton, TN
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: maroubra_boy]
      #5581952 - 12/21/12 07:04 AM

The 30mm will provide a little more TFOV and a darker background, both of which should be better for using as a finder. My $0.02.

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csrlice12
Postmaster
*****

Reged: 05/22/12

Loc: Denver, CO
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: aa5te]
      #5582136 - 12/21/12 09:31 AM

That 30mm ES82 is a great eyepiece in my 10XTi, don't think I'd want to go any lower power then that. Truthfully, the 24mm ES82 is my favorite eyepiece in that scope......Mine are the older, non-waterproof, size of a house and weighs as much as a neutron star, but the views......just wow.....

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rflinn68
Carpal Tunnel


Reged: 03/09/12

Loc: Arkansas
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: csrlice12]
      #5582251 - 12/21/12 10:40 AM

Without a doubt the ES 82* 30mm will be the best eyepiece for you between these two. The 30 will give you 40X with a fov of 2.05 degrees and the 34mm 68* will be 35X with a fov of 1.93 degrees. On top of that the exit pupil is 6.38mm with the 30mm and 7.23mm with the 34mm with your f/4.7 scope. If you're an eyeglass wearer the 30mm has an eye relief of 21mm and the 34mm is 26mm but anything over 17mm should be fine so that shouldnt be an issue. Get the 82* 30mm, you'll love it. I own the ES 82* 24mm and, as mentioned above, it is also my favorite eyepiece with my XT10i f/4.7 scope. I've looked through the 30 and its on my wishlist.

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JayinUT
I'm not Sleepy
*****

Reged: 09/19/08

Loc: Utah
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: rflinn68]
      #5582306 - 12/21/12 11:23 AM

I have the 30mm ES 82 and use it in my 14inch Zambuto f4.6. Without my Paracorr I the eyepiece shows coma to around 10 to 15% from the edge. No field curvature is evident in my scope. I love my 30mm 82 and for the price, it is just an outstanding eyepiece. Heavy, but still outstanding. Viewing the Double Cluster, the Veil, and other wide field objects through it is so enjoyable.

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Scanning4Comets
Markus
*****

Reged: 12/26/04

Loc: Ontario, Canada
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: JayinUT]
      #5582344 - 12/21/12 11:40 AM

Thanks you guys! So far it looks like the 30mm ES is the EP of choice between these two! It looks like I may have to delve into the 30mm ES 82 soon, but there is a slight problem....

I would have to sell my 10mm Pentax XW in order to get it because I can't afford it right now !!! If I did get the 30mm ES 82, I would also sell the 38mm Orion Q70, which I wouldn't mind selling!

That would leave me with:

30mm ES 82
22mm Vixen LVW
14mm Denkmeier
7mm Pentax XW
2X GSO ED barlow

This would leave me with nicer "jumps" in magnification as well.....Hmmmmmmm....

Suggestions?

Cheers,


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csrlice12
Postmaster
*****

Reged: 05/22/12

Loc: Denver, CO
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: Scanning4Comets]
      #5582385 - 12/21/12 12:11 PM

I'd still keeep the Pentax...just sayin.....maybe give up eating for a couple of weeks....

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rflinn68
Carpal Tunnel


Reged: 03/09/12

Loc: Arkansas
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: csrlice12]
      #5582422 - 12/21/12 12:31 PM

Quote:

I'd still keeep the Pentax...just sayin.....maybe give up eating for a couple of weeks....




X2!! Save your money a little longer and hang onto that Pentax


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Damo636
sage


Reged: 08/16/11

Loc: Co Fermanagh, Northern Ireland
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: rflinn68]
      #5582562 - 12/21/12 02:16 PM

X3

Keep the XW!!


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SteveG
Post Laureate
*****

Reged: 09/27/06

Loc: Seattle, WA
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: rflinn68]
      #5582576 - 12/21/12 02:24 PM

I've looked through both in fast dob's.

The 34 mm has excellent correction and wonderful eye relief. I've also estimated its afov to be a little bigger than advertised - about 71 deg.

The 30 mm also has excellent correction, but the eye relief is no where near the advertised 21mm. The 30mm is also much larger and extremely heavy.


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Tank
Carpal Tunnel
*****

Reged: 07/27/09

Loc: Stoney Creek, Ontario, CANADA
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: SteveG]
      #5582640 - 12/21/12 03:02 PM

Personally i liked the 34 SWA 5000!
Had both


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aa5te
Genial Procrastinator
*****

Reged: 08/30/08

Loc: Clinton, TN
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: Tank]
      #5582697 - 12/21/12 03:45 PM

I actually prefer the Meade 5000 series 40mm SWA over the 31mm Axiom LX most of the time in my 10" f/5. The Meade has better edge correction and the view is simply more pleasing to me; eye relief is better also, and you get a smidgen more TFOV. Sure, it's an 8mm exit pupil in my scope, but it's a pleasant 8mm.

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rflinn68
Carpal Tunnel


Reged: 03/09/12

Loc: Arkansas
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: aa5te]
      #5582787 - 12/21/12 04:38 PM

Quote:

I actually prefer the Meade 5000 series 40mm SWA over the 31mm Axiom LX most of the time in my 10" f/5. The Meade has better edge correction and the view is simply more pleasing to me; eye relief is better also, and you get a smidgen more TFOV. Sure, it's an 8mm exit pupil in my scope, but it's a pleasant 8mm.




You must have very good eyes! Most people said I was crazy viewing with my 38mm AT Titan in my 10" f/4.7 (also 8mm exit pupil) but I love it for wide sweeping views. I see plenty of light to my eye.


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Scanning4Comets
Markus
*****

Reged: 12/26/04

Loc: Ontario, Canada
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: rflinn68]
      #5583086 - 12/21/12 07:27 PM

Quote:

I've looked through both in fast dob's.

The 34 mm has excellent correction and wonderful eye relief. I've also estimated its afov to be a little bigger than advertised - about 71 deg.

The 30 mm also has excellent correction, but the eye relief is no where near the advertised 21mm. The 30mm is also much larger and extremely heavy.




This is kinda what I surmised. If the 30mm ES has eye relief that is nowhere near 21mm, what exactly is it? How is viewing thru it wearing glasses? I really like SWA eyepieces, as my 28mm Meade 5000 SWA was a really nice EP, and I only went to the 38mm Q70 for a wider field for star hopping. I suspect that the 34mm SWA or a 34mm ES would have fit the bill perfectly. Either one of those would be better than my 38mm Q70 and the weight of the 30mm UWA and shorter ER kinda sways me towards the 34mm SWA or 34mm ES a bit more.

Quote:

Personally i liked the 34 SWA 5000!
Had both




I remember looking through your 34mm SWA and I really liked it! I didn't get a chance to view through your 30mm ES 82 tho!

I'm going to hang onto the 10mm XW and wait!

Thanks for the tips and encouragement guys!

You're the BEST!


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SteveG
Post Laureate
*****

Reged: 09/27/06

Loc: Seattle, WA
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: Scanning4Comets]
      #5584362 - 12/22/12 05:00 PM

, I looked through the 30mm this summer, through a 12" dob . The views were fantastic, even without a Paracorr. But there is no way you would be able to see the entire fov with glasses on.

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sopticals
professor emeritus


Reged: 03/28/10

Loc: New Zealand
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: SteveG]
      #5584657 - 12/22/12 08:22 PM

The ES82 30mm is an incredible eyepiece, with acceptable exit pupil in your scope. You will use more of your effective aperture in the 30mm over the 34mm ocular.

Stephen.(44deg.S.)


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Scanning4Comets
Markus
*****

Reged: 12/26/04

Loc: Ontario, Canada
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: sopticals]
      #5584668 - 12/22/12 08:30 PM

Quote:

I looked through the 30mm this summer, through a 12" dob . The views were fantastic, even without a Paracorr. But there is no way you would be able to see the entire fov with glasses on.




That would be a bit of a deal breaker for me as I need my glasses for reading maps and drawing which I do a lot of when I observe to keep records of what I see. The edge correction would prob be better in the 30mm ES 82, but the 34mm Meade 5000 SWA, (decloaked), or 34mm ES 68 will be the choice for me. I am not sure how much better the 34mm ES or Series 5000 will be over my 38mm Orion Q70 tho!

Quote:

The ES82 30mm is an incredible eyepiece, with acceptable exit pupil in your scope. You will use more of your effective aperture in the 30mm over the 34mm ocular.




I don't think going from a 34mm to a 30mm will make that much of a difference. My lowest power oculars are all only used for star hopping and the occasional look ay M-45, The Veil and a few others. I do want something a bit better than my 38mm Q70 however.

I think my best scenario would be to try both if somebody has them when I go out observing again! Maybe this summer will bring me such luck! I did have a look through a 30mm Meade 5000 UWA (82°) and really liked it actually, but forgot to look through it with my glasses!




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beatlejuice
Pooh-Bah
*****

Reged: 04/05/11

Loc: Hamilton, ON,Canada
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: Scanning4Comets]
      #5585008 - 12/23/12 01:39 AM

Quote:

I did have a look through a 30mm Meade 5000 UWA (82°) and really liked it actually, but forgot to look through it with my glasses!




I will remind you next time, and now it is slimmed down. And I cant wait to try my new DGM OIII filter in it.

Eric


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Scanning4Comets
Markus
*****

Reged: 12/26/04

Loc: Ontario, Canada
Re: 30mm ES 82 Vs 34mm ES SWA new [Re: beatlejuice]
      #5585087 - 12/23/12 04:19 AM

Hey Eric! It's great to see you're still doing good and active here on CN! I'll be looking forward to checking out the slimmed down version of the 30mm Meade 5000 UWA!

I'd like to see what it is like weight wise and how it would work with glasses! Having access to eyepieces is the best way to go when wondering about how they will work.

Cheers, and Happy Holidays!

-Mark


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