Telescope Reviews: TeleVue Nagler 31mm vs Explore Scientific 30mm ?

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Equipment Discussions >> Eyepieces

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Jon Isaacs
Postmaster

Reged: 06/16/04

Loc: San Diego and Boulevard, CA

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new

[Re: Damo636]
#5568784 - 12/13/12 08:02 AM

Quote:

I don't know if its my eyes, but the 31 Nagler has the worst pincussion distortion I have ever seen! The ES to my eyes has a much flatter field.

A flat field means that the entire field is in focus at the same time. In my experience, the 31mm Nagler has a very flat field.

Pincushion distortion is something else all together.

Jon

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Damo636
sage

Reged: 08/16/11

Loc: Ireland

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new

[Re: Jon Isaacs]
#5568871 - 12/13/12 09:27 AM

You are correct Jon, I'm getting my aberrations mixed up

The 31 Nagler has a flat field but, for example, panning through the Milky Way, its as if the field is bending, almost like looking through a fishbowl! It doesn't bother me as I don't tend to observe in this manner, but I can see how some have experienced a feeling of motion sickness as a result. I found the ES to be much better in this regard!

Post Extras:

Scanning4Comets
Markus

Reged: 12/26/04

Loc: Deep Space!

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new

[Re: Damo636]
#5569521 - 12/13/12 04:12 PM

What is the exact weight of the 30mm ES N2 82? I was thinking of selling my Orion 38mm Q70, and getting a 30mm ES N2 82 for better edge correction and a smaller exit pupil.

Are they 3 pounds?

Cheers,

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Damo636
sage

Reged: 08/16/11

Loc: Ireland

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new

[Re: Scanning4Comets]
#5569561 - 12/13/12 04:43 PM Attachment (27 downloads)

Its slightly heavier than the 31 Nagler Mark....

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Scanning4Comets
Markus

Reged: 12/26/04

Loc: Deep Space!

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new

[Re: Damo636]
#5569573 - 12/13/12 04:54 PM

That's not too bad at all! Just over 2 pounds would be ok! Thanks for putting the 30mm on the scale Damo! I thought they were 3 pounds....but just over 2 is fine !!!

I'm thinking of selling up my 38mm Q70 and grabbing one of these!!! I love the eyepiece pron. :^)

Cheers,

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Djarum
scholastic sledgehammer

Reged: 03/12/09

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm ? new

[Re: Scanning4Comets]
#5569601 - 12/13/12 05:14 PM

Good comparison. Thinking about getting the ES to replace my AT Titan II 40mm. The ES should give me similar FOV at more magnification.

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csrlice12
Post Laureate

Reged: 05/22/12

Loc: Denver, CO

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm new

[Re: johnnyha]
#5570472 - 12/14/12 08:46 AM

Quote:

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.

Wow, a doctor who does what he can to help his patients??? That's a rare thing these days....congratulations!

They would probably be great for those with astigmatism, but they'd have to be by prescription only....

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Starry eyes
member

Reged: 04/30/10

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm new

[Re: csrlice12]
#5571932 - 12/15/12 01:59 AM

One important feature that the Nagler 31mm can make use of is the Dioptrix. I have a Dioptrix on my 31mm so I don't need eyeglasses for my visual use. I find that the combination of the Paracorr II, 31 Nagler, and Dioptric is a real treat to use on my F4.5 scopes. I don't know if anybody else has this complete system so well dialed in.

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bherv
Pooh-Bah

Reged: 03/10/06

Loc: WMass

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm new

[Re: Starry eyes]
#5572263 - 12/15/12 09:56 AM

I had a chance to do a side by side comparison of the two. I found that both are excellent eyepieces. One thing I found surprising was that despite
the slightly higher magnification of the ES 30 it actually seem to have a larger total field of view. I was using a 17.5" f/4.5 with a Paracorr for the test. The ES 30 is definitely a great value at 1/2 the price of the 31 Nagler.
Barry

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ohioalfa64
member

Reged: 08/16/12

Loc: Ohio

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm new

[Re: bherv]
#5580755 - 12/20/12 01:59 PM

My ES 30mm 82-N2 arrived today. Yes, it weighs in at 2 lbs 4 oz. It is the size of a large Hermes Egg. It is huge to hold in your hands. Its like softball size.

Can't wait to see it in my Dob (12.5" f4.0), paracorred of course (to f4.6).

Post Extras:

Scanning4Comets
Markus

Reged: 12/26/04

Loc: Deep Space!

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm new

[Re: ohioalfa64]
#5581812 - 12/21/12 02:21 AM

Quote:

I had a chance to do a side by side comparison of the two. I found that both are excellent eyepieces. One thing I found surprising was that despite
the slightly higher magnification of the ES 30 it actually seem to have a larger total field of view. I was using a 17.5" f/4.5 with a Paracorr for the test. The ES 30 is definitely a great value at 1/2 the price of the 31 Nagler.
Barry.

What's the 30mm ES 82 like w/o a Paracorr @ F/4.7? From your review Alexis, you said you could see field curvature.
I detest FC and can put up with a bit of coma more.

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csrlice12
Post Laureate

Reged: 05/22/12

Loc: Denver, CO

Re: TeleVue Nagler 31mm vs Explore Scientific 30mm new

[Re: ohioalfa64]
#5582170 - 12/21/12 09:55 AM

Quote:

My ES 30mm 82-N2 arrived today. Yes, it weighs in at 2 lbs 4 oz. It is the size of a large Hermes Egg. It is huge to hold in your hands. Its like softball size.

Can't wait to see it in my Dob (12.5" f4.0), paracorred of course (to f4.6).

The old, nonwaterproof version weighs in at 3.08lbs, but what an eyepiece!

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