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Vixen 120s 5 elements

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#1 Marcus Roman

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Posted 25 November 2019 - 08:09 PM

Hi friends, I am collecting info about a very rare bird, the achromat VIXEN 120S five elements, a prototype of the following NA series, which was provided with a doublet objective and a triplet corrector group just before the focuser.
I read an article some time ago on CN but can't find it again...any feedback?

 

Thanks and clear skies!

Marcus


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#2 Terra Nova

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Posted 25 November 2019 - 09:10 PM

I have one! It’s a really nice scope. I bought it last Spring from Koji Matsumoto and he shipped it to me from Japan. It has much better color correction than the Orion-branded Vixen 120mm Neoachromat that I purchased new from Orion back in 2001. While the 120S looks like the Neoachromat, is a much better scope optically. It has very sharp, contrasty images and a very flat field, with much less false color. I was never happy with the Orion/Vixen version (it didn’t have the triplet Petzval element in the rear like my 120S does. It’s my ‘big’ refractor and a keeper! 

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Edited by Terra Nova, 25 November 2019 - 09:13 PM.

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#3 Joe Eiers

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Posted 25 November 2019 - 09:18 PM

  Now THAT is a cool piece of glass.  I haven't had the pleasure of looking through one!  Sweet!  How hard are they to find?  So the Vixen is the 120s and the Orion version is just the 120?  Is that correct?  F/6.6?

  Very cool, I find this super interesting!

    Joe


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#4 Terra Nova

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Posted 25 November 2019 - 11:22 PM

Thanks. It’s the only one I’ve ever seen. The Orion version is equivalent to the Vixen NA120, this is the 120S. It’s focal length is 800mm so F6.67.

Edited by Terra Nova, 25 November 2019 - 11:24 PM.

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#5 Marcus Roman

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Posted 26 November 2019 - 08:01 AM

Thank you Terra! I very much appreciate your report and the photos you posted, really a beautiful scope, very cool...I wish I found one...

If I can ask, have you tested on planets? What degree would you say the CA is?

 

Thanks you!!!!...:-) 

 

Marcus


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#6 Terra Nova

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Posted 26 November 2019 - 03:35 PM

Thank you Terra! I very much appreciate your report and the photos you posted, really a beautiful scope, very cool...I wish I found one...

If I can ask, have you tested on planets? What degree would you say the CA is?

 

Thanks you!!!!...:-) 

 

Marcus

 

Yes, it’s performance on Jupiter and Saturn was breathtaking last summer. I had it to quite high powers with 3.8mm and 2.5mm Vixen Lanthanum eyepieces and the views were very sharp with CA very well controlled. I would say it performs about like a 5” F12 achromat, very similar to a 5” F12 D&G I’ve observed the planets with. I’m quite happy with it.


Edited by Terra Nova, 26 November 2019 - 03:36 PM.

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#7 Marcus Roman

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Posted 26 November 2019 - 03:48 PM

Yes, it’s performance on Jupiter and Saturn was breathtaking last summer. I had it to quite high powers with 3.8mm and 2.5mm Vixen Lanthanum eyepieces and the views were very sharp with CA very well controlled. I would say it performs about like a 5” F12 achromat, very similar to a 5” F12 D&G I’ve observed the planets with. I’m quite happy with it.

Thank you Terra! It is really a unique piece, would say it is amazingly interesting......now, the hunt starts!....:-)

Clear skies, friend.

Marcus


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#8 diglit

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Posted 20 February 2020 - 02:50 PM

I have Just get one of theese.
The 120s ancestor of NA line, hoping it's good as Terra says (no doubts about)

Paolo
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#9 Marcus Roman

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Posted 20 February 2020 - 03:12 PM

I have Just get one of theese.
The 120s ancestor of NA line, hoping it's good as Terra says (no doubts about)

Paolo

Ciao Paolo, please share your experiences with it once you have tested, thanks!



#10 Terra Nova

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Posted 20 February 2020 - 03:14 PM

I can’t wait to get mine out for Jupiter, Mars, and Saturn in the ensuing months!



#11 diglit

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Posted 20 February 2020 - 03:59 PM

I'll do, don't worry.

I have only one problem: too many telescopes and no time enought to use them... bawling.gif

For the "new" Vixen I have to wait a couple of weeks, then I'll test it and give you my personal impressions.

 

Paolo


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#12 starman876

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Posted 20 February 2020 - 08:04 PM

I have the 5" NEO version with four elements.  Have alway been happy with it. Would love to look through the 5 lens version.


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#13 Lucullus

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Posted 25 March 2020 - 05:04 AM

Thanks. It’s the only one I’ve ever seen. The Orion version is equivalent to the Vixen NA120, this is the 120S. It’s focal length is 800mm so F6.67.

I'm confused concerning Orion-branded Vixen. In your post #2 you agree that you have a Vixen 120S with five lenses and that it's better than the "Orion-branded Vixen 120mm Neoachromat" you got from Orion back in 2001. Was there Orion or Vixen on the tube? How can it be Orion and Vixen at the same time? What was it's official name: Orion NA120?

 

Furthermore, I'm confused concerning the S and SS versions. The Vixen Neoachromats were called Vixen NA[aperture]SS, weren't they? So the Orion Neoachromat telescope you had was an SS version as well?

And the wonderful telescope you have now is a Vixen 120S which is not a Neoachromat. Was there also a 130S version of this?


Edited by Lucullus, 25 March 2020 - 05:23 AM.


#14 starman876

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Posted 25 March 2020 - 10:07 AM

What does all this have to do with classic telescopes?




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