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Discontinued TeleVue Original 9 mm Nagler

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#1 fishingtom

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Posted 28 November 2020 - 09:25 AM

Anyone tell me anything about this particular lens?  I found a used one for what seems to me to be ridiculously cheap.  Would this be a useful lense for my 8se?

Thanks



#2 Starman27

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Posted 28 November 2020 - 10:14 AM

Moving for a better fit.



#3 lee14

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Posted 28 November 2020 - 10:19 AM

It depends. If it's the original model, I'd avoid it. Some of the early Televues had a 'kidney bean effect', a blank spot in the FOV that varied as you moved your eye around. If it's a 'Type 2' or later, they're fine. I have the 9mm Type 2 and it's one of my most used ep's.

 

Lee



#4 junomike

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Posted 28 November 2020 - 10:24 AM

It's a good eyepiece for the right price.  Used they tend to go between $125 - $150.



#5 CHASLX200

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Posted 28 November 2020 - 10:26 AM

If it a smooth side with the Circle Nj mark it is the best 9mm Nag made in my book. Avg used price is around 90 to 140 smackers. Most are kinda beat up and well used.


Edited by CHASLX200, 28 November 2020 - 10:26 AM.

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#6 Jon Isaacs

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Posted 28 November 2020 - 10:38 AM

It depends. If it's the original model, I'd avoid it. Some of the early Televues had a 'kidney bean effect', a blank spot in the FOV that varied as you moved your eye around. If it's a 'Type 2' or later, they're fine. I have the 9mm Type 2 and it's one of my most used ep's.

 

Lee

 

:scratchhead:

 

As far as I know there is no 9mm Nagler Type 2. The original type 1 Naglers were the 4.8mm, 9mm and 13 mm introduced in 1980 and the 7 mm and 11 mm introduced in 1984. The type 2s are the 12 mm, 16 mm and 20mm.

 

https://www.televue....d=13&Tab=_chron

 

Jon


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#7 csrlice12

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Posted 28 November 2020 - 10:39 AM

In your 8SE, it will perform well...I have a complete set of the T1s and the 13mm is the only one that kidney beans...the 9mm and the 7mm are the good ones in the set.  The 9mm is dual barreled for either 1.25 or 2" use.


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#8 Chris Johnson

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Posted 28 November 2020 - 11:25 AM

I have an original 7mm smooth side Nagler. Does the 9mm you’re considering have smooth side? The 7mm gets a lot of use in my f7 refractors and my C-8. The only problem I have encountered is flare from external lights because it doesn’t have an eyecup to block extraneous light and I haven’t found one of the correct I’d. 



#9 lee14

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Posted 28 November 2020 - 11:30 AM

scratchhead2.gif

 

As far as I know there is no 9mm Nagler Type 2. The original type 1 Naglers were the 4.8mm, 9mm and 13 mm introduced in 1980 and the 7 mm and 11 mm introduced in 1984. The type 2s are the 12 mm, 16 mm and 20mm.

 

https://www.televue....d=13&Tab=_chron

 

Jon

You're absolutely correct. I remember comparing ep's at Pocono Mountain Optics about twenty years ago, and I must have misremembered the comparisons. I looked through the 12mm T2 and the 13mm T1, and chose the 12 because it lacked the kidney bean that was so annoying in the 13. Looking through my 2" eyepiece case I see the 9 is definitely not a Type 2 (maybe the earlier versions were smoothies? This one has the rubber eyecup, and that may have led to think it was a T2) I also have the 20mm T2, though I admit it doesn't get much use, the 32mm Widefield which is the initial ep I use for anything, and the 55mm Plossl, which also gets little use since the 32 has essentially the same FOV, but higher magnification.

 

Lee



#10 SeattleScott

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Posted 28 November 2020 - 12:10 PM

I have owned the 7T1 and 9T1. The supposed concern with the T1 Naglers is SAEP which can cause kidney beaning, particularly in longer focal lengths. I didn’t notice any particular issues with the 7 or 9. I understand it becomes a bigger deal as the FL gets into double digits, or if you use it in a fast scope.

I felt the 9mm was a little dim so I sold it. Maybe the older coatings or coating damage.

Scott
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#11 lphilpot

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Posted 28 November 2020 - 01:17 PM

I have an original 9mm Nagler and while you can find kidney bean effect (if you try hard enough) it's never been a problem in regular observing to me. The original 13? Another story altogether and a total show-stopper IMO. I've not used an original 11.



#12 Scott in NC  Happy Birthday!

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Posted 28 November 2020 - 01:41 PM

I really like my 9mm type 1.  It's got a dual 1.25"/2" skirt, which makes it more versatile.  I bought a 9mm type 6 several years ago to compare the two.  I know that it's been said that the type 6 has better coatings, and while I have no doubt that that's probably true, I couldn't see any difference in the views.  Admittedly, I didn't compare them side by side on the same objects on the same night.  I did find the view more immersive in the type 1, which is one of the major reasons for my preference. 

 

A few years ago I sold my first 9mm type 1 as I found that I wasn't using it as much after stocking up on the Ethos line.  But a few months ago I decided that I missed it so much that I bought another one.  The views through it are just as good as I remembered, and this one is here to stay! ubetcha.gif


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#13 GaryJCarter

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Posted 28 November 2020 - 04:40 PM

I used the TeleVue Nagler Type 1 and Type 2 eyepieces along with the 40mm Widefield extensively in my C8. IMO they represent a great bargain on the used market. The 9mmNT1 came in smooth sided without an eyecup as well as with the rubber grip and eyecup. There was never a Type 2 offered in this focal length. While the 13NT1 suffered from SAEP, I never experienced it with the 9mm and 7mm NT1s. (In fact it was only in daylight that I ever experienced it with the 13NT1). 
 

The 40mm Widefield and the 20mm NT2 are heavy eyepieces and thus may require a counterbalance weight with your 8SE.


Edited by GaryJCarter, 28 November 2020 - 04:42 PM.

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#14 Tank

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Posted 28 November 2020 - 06:03 PM

7,9,11 T1 are really nice
4.8 and 13 are tough to view thru for different reasons

#15 alnitak22

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Posted 28 November 2020 - 06:44 PM

It depends. If it's the original model, I'd avoid it. Some of the early Televues had a 'kidney bean effect', a blank spot in the FOV that varied as you moved your eye around. If it's a 'Type 2' or later, they're fine. I have the 9mm Type 2 and it's one of my most used ep's.

 

Lee

If it’s a 9mm Nagler, it’s either a T1 or a T6. Also, the 9 T1 has much less of a kidney bean problem than the 13. The effect is much reduced and not noticeable to most observers with the 9,7, and 4.8 T1 Naglers.



#16 lee14

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Posted 28 November 2020 - 09:09 PM

If it’s a 9mm Nagler, it’s either a T1 or a T6. Also, the 9 T1 has much less of a kidney bean problem than the 13. The effect is much reduced and not noticeable to most observers with the 9,7, and 4.8 T1 Naglers.

Read my other post.

 

Lee



#17 Jon Isaacs

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Posted 28 November 2020 - 09:59 PM

Read my other post.

 

Lee

 

Lee:

 

I read your other post.

 

There is no 9 mm Type 2 Nagler.  Look at the link to TeleVue Timeline I posted.  Here it is again:

 

https://www.televue....d=13&Tab=_chron

 

Jon



#18 Miranda2525

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Posted 28 November 2020 - 11:08 PM

Anyone tell me anything about this particular lens? I found a used one for what seems to me to be ridiculously cheap. Would this be a useful lense for my 8se?
Thanks


I wouldn't get it. Too much kidney beaning.

#19 alnitak22

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Posted 28 November 2020 - 11:49 PM

I wouldn't get it. Too much kidney beaning.

Nope. Kidney beaning not an issue in the original Naglers under 11mm. 


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#20 Miranda2525

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Posted 29 November 2020 - 12:01 AM

Nope. Kidney beaning not an issue in the original Naglers under 11mm. 

Yes, it was for me. Not a fan.



#21 Jon Isaacs

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Posted 29 November 2020 - 12:04 AM

Nope. Kidney beaning not an issue in the original Naglers under 11mm.

 

 

I never had the 9mm, only the 4.8mm and the 7mm. But I looked through the 9mm a time or two. I never had any kidney beaning with any of them.  But I kidney beaning and issues involving eye placement just don't seem to happen to me.  

 

I still have a 4.8mm.  Love it for Doubles.  For the close ones, with a 2X Barlow.  Last year I split a 0.44" double with my 13.1 inch, 875x with the 4.8mm + 2X barlow.

Nope. Kidney beaning not an issue in the original Naglers under 11mm. 

 

Not much eye relief on the 4.8mm but more than an Ortho, I call it my "Nagler Ortho."  

 

Jon


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#22 lee14

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Posted 29 November 2020 - 08:10 AM

Lee:

 

I read your other post.

 

There is no 9 mm Type 2 Nagler.  Look at the link to TeleVue Timeline I posted.  Here it is again:

 

https://www.televue....d=13&Tab=_chron

 

Jon

Yes, I got it the first time. I explained the source of my error in the second post. The 'read my other post' comment was addressed to alnitak22.

 

Lee


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#23 fishingtom

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Posted 29 November 2020 - 08:22 AM

Thanks for all the helpful information!



#24 CHASLX200

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Posted 29 November 2020 - 07:32 PM

Never saw the bean effect in my old 9mm Nagler.  And that includes Navy , pinto and green beans.


Edited by CHASLX200, 29 November 2020 - 07:33 PM.

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#25 Peter Besenbruch

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Posted 30 November 2020 - 03:02 PM

Another former owner of a 9mm type one Nagler. I agree with others that kidney beaning isn't really an issue at 9mm. Longer focal lengths, yes, but not at 9mm. Other , narrower angle, eyepieces of the day offered brighter images, and a bit more pop on planets. Overall, though, the 9mm did a decent job.




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