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Equipment Discussions >> Eyepieces

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Nigel_Choy
super member


Reged: 12/30/10

Loc: Kuala Lumpur , Malaysia
TeleVue Nagler 31mm vs Explore Scientific 30mm ?
      #4352210 - 01/31/11 04:26 AM

I am looking on purchasing either one of this EP's

Explore Scientific 30mm 82 FOV
TeleVue nagler 31mm 82 FOV

Can anyone tell me the difference between this 2 EPs Which is better and what makes it better from the other one. Thanks!!


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Jon Isaacs
Postmaster
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Reged: 06/16/04

Loc: San Diego and Boulevard, CA
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: Nigel_Choy]
      #4352288 - 01/31/11 06:15 AM

I can't say... the 31mm Nagler is the longer focal length widefield all are compared against... Cost wise, it's a bundle but I finally sprung for one and it's a wonderful eyepiece in any scope, fast or slow.

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Darenwh
Carpal Tunnel


Reged: 05/11/06

Loc: Covington, GA
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: Jon Isaacs]
      #4352352 - 01/31/11 07:54 AM

I have seen posts by some people who have switched from the Nagler 31mm to the Explore Scientific 30mm. Hopefully some of those people will submit their stories to this thread. I have the ES30 and can say it is an increadable eyepiece. I have not compaired it head to head with the Nagler 31mm so cannot give you a direct compairison. I will say though that with either eyepiece you will be very happy.

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rdl800
professor emeritus
*****

Reged: 01/18/11

Loc: CT
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: Nigel_Choy]
      #4352439 - 01/31/11 09:03 AM

the 27mm or the 35mm TV Panoptic is a cheaper alternative that provides great results. If you use it on your cpc8 you'll be satisfied with the results.

I have the 35mm Panoptic and it's a great low power eyepiece for my 8" scope! ..if not, I'd lean toward the venerable Nagler 31mm; hard to argue with success!


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FirstSight
Duke of Deneb
*****

Reged: 12/26/05

Loc: Raleigh, NC
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: rdl800]
      #4352508 - 01/31/11 09:37 AM

Completely aside from their comparative optical qualities, there's a difference in the respective shapes of the two eyepieces that to some, makes the 31T5 notably more comfortable to use, but to others, may make little difference at all. The section of the 31T5's body immediately underneath the eyelens has a tapered conical shape, whereas the 30mm Explore Scientific has more of a flat cylindrical shape with little to no taper around the eyelens. The 31T5's tapered shape makes it easier to many people's tastes to snuggle their face (particularly their cheek area underneath the eye socket) into a comfortable viewing position than with the Explore Scientific's shape. Note that while this issue obviously interrelates with eye relief, it is nonetheless a distinctly different issue from what distance between eyelens and eye the design is optimized for (i.e. eye relief).

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Darenwh
Carpal Tunnel


Reged: 05/11/06

Loc: Covington, GA
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: FirstSight]
      #4352533 - 01/31/11 09:48 AM

Actually, the Explore Scientific N2 30mm, the newer version of this eyepiece, has an eye lens that is easy to look through. I have the origional and had to remove the twist up portion to get my eye into a good viewing position. As long as a person gets the newer version they should have no problems with eye placement.

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FirstSight
Duke of Deneb
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Reged: 12/26/05

Loc: Raleigh, NC
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: Darenwh]
      #4352546 - 01/31/11 09:54 AM

Quote:

Actually, the Explore Scientific N2 30mm, the newer version of this eyepiece, has an eye lens that is easy to look through. I have the origional and had to remove the twist up portion to get my eye into a good viewing position. As long as a person gets the newer version they should have no problems with eye placement.




Yes, I just looked at ES's website, and the shape of the new N2 series is much closer to that of the 31T5 Nagler (tapered conical section). The older more cylindrical version (which a fellow club member bought last year and which I've tried a few times back-to-back with my 31T5) simply wasn't nearly as comfortable to my tastes.

So, with this distinction in mind, it's back to optical comparisons.


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Tank
Carpal Tunnel
*****

Reged: 07/27/09

Loc: Stoney Creek, Ontario, CANADA
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: FirstSight]
      #4353192 - 01/31/11 01:46 PM

Had the Meade 30mm 5000 UWA which is supposed to be very similar to the ES and having looked thru the 31T5 Nagler i would pick the TV Nagler. The Meade was nice but the Nagler was great!

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GeneT
Ely Kid
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Reged: 11/07/08

Loc: South Texas
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: Nigel_Choy]
      #4353844 - 01/31/11 06:36 PM

I am sure that they are both excellent eyepieces. They both are about of the same weight. I own the 31mm Nagler. It is a great eyepiece.

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orveko
professor emeritus
*****

Reged: 02/04/09

Loc: Lake County, IL
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: GeneT]
      #4353897 - 01/31/11 06:59 PM

Does anyone have a comment on how either of these eyepieces work with glasses? I am often skeptical of posted eye relief specifications ...

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Tank
Carpal Tunnel
*****

Reged: 07/27/09

Loc: Stoney Creek, Ontario, CANADA
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: orveko]
      #4353901 - 01/31/11 07:03 PM

Quote:

Does anyone have a comment on how either of these eyepieces work with glasses? I am often skeptical of posted eye relief specifications ...



The Meade 5000 UWA i could see apprx. 70% of the FOV with my glasses, with the 40mm SWA 5000 you can easilly take in the whole FOV.


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orveko
professor emeritus
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Reged: 02/04/09

Loc: Lake County, IL
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new [Re: Tank]
      #4353909 - 01/31/11 07:06 PM

Quote:

Quote:

Does anyone have a comment on how either of these eyepieces work with glasses? I am often skeptical of posted eye relief specifications ...



The Meade 5000 UWA i could see apprx. 70% of the FOV with my glasses, with the 40mm SWA 5000 you can easilly take in the whole FOV.



Thanks a bunch


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GeneT
Ely Kid
*****

Reged: 11/07/08

Loc: South Texas
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? [Re: orveko]
      #4354530 - 01/31/11 11:19 PM

Quote:

Does anyone have a comment on how either of these eyepieces work with glasses? I am often skeptical of posted eye relief specifications ...




I have found that posted eye relief of at least 17mm to be necessary to view while wearing glasses. Visit the vendor's internet site you are interested in purchasing from. Drill down until you get the eye relief. My 17mm and 12mm Naglers have 17mm of eye relief--and I can get the entire field in. My 31 and 22 Naglers have 19mm of eye relief, plenty for use while wearing glasses. Eye relief of 19 to 20mm of eye relief should be plenty. Different brands of eyepieces have different characteristics. Therefore, in the final analysis, you have to test eyepieces with eye relief of 17mm or so.


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johnnyha
Postmaster
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Reged: 11/12/06

Loc: Sherman Oaks, CA
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm [Re: GeneT]
      #4354697 - 02/01/11 12:57 AM

Do y'all think there is a market for "astro eyeglasses" that are smaller and inset quite a bit closer to the eyes? My optometrist says can do pretty much anything and he works with these tiny eyeglasses that I would bet could easily be altered to make it easier to get the eye in closer to the eyepiece... He used Zeiss coatings on my newest pair of regular glasses when I told him I was into astronomy.

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Nigel_Choy
super member


Reged: 12/30/10

Loc: Kuala Lumpur , Malaysia
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm [Re: johnnyha]
      #4354864 - 02/01/11 04:20 AM

That's a cool glasses.. I myself is a eye glass wearer. I wonder where you get those glasses?

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spacedoutbob
member


Reged: 03/26/08

Loc: California
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm [Re: Nigel_Choy]
      #4354873 - 02/01/11 04:36 AM

I have never looked through a ES 30mm. I have had a 31mm nagler for 10 years. Until the Ethos came out, that was my main eyepiece I used in my 10" Meade Starfinder Equatorial and 17.5" Discovery Truss Tube. I still use it. It's a fantastic eyepiece. Just my 2/100th of a dollar.

Bob


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Nigel_Choy
super member


Reged: 12/30/10

Loc: Kuala Lumpur , Malaysia
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm [Re: spacedoutbob]
      #4355336 - 02/01/11 10:44 AM

So Should i go for the TV 31mm type 5?

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Nigel_Choy
super member


Reged: 12/30/10

Loc: Kuala Lumpur , Malaysia
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm [Re: spacedoutbob]
      #4355342 - 02/01/11 10:46 AM

So I'll go for the TV 31mm type 5? Good Idea?

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kohudson
sage


Reged: 01/21/09

Loc: Mayhill, NM
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm [Re: Nigel_Choy]
      #4355439 - 02/01/11 11:32 AM

Quote:

So I'll go for the TV 31mm type 5? Good Idea?




When I went to the Deepest South Texas Star Safari in Australia last year I had the pleasure of viewing through a TV 31mm for several nights. What a wonderful eyepiece. I haven't tried the Explore Scientific but I can vouch for the Nagler. I'm saving my money for one... By the way, I wear glasses while observing.

I think you are going to be happy with your decision!

Thanks,


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Paul G
Post Laureate
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Reged: 05/08/03

Loc: Freedonia
Re: TeleVue Nagler 31mm vs Explore Scientific 30mm [Re: Nigel_Choy]
      #4355514 - 02/01/11 12:05 PM

Quote:

So Should i go for the TV 31mm type 5?




It's one of my most used eyepieces. Highly recommended.


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