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Vixen Sky Scope 80s /560mm

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#1 Marcus Roman

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Posted 26 July 2018 - 10:06 AM

Hello to everyone, does anyone have any info about this small Vixen refractor? I just bounght it urged simply by its vintage look...The previous owner told me that it's from '70s. I find odd its 80/560mm f dimensions...Im attaching two photos.

Clear skies!

Marcus

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#2 memento

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Posted 26 July 2018 - 02:06 PM

Great find. The only achromat classic 80/560mm that I knew so far is the one from Dai-Ichi Kogaku. Not sure if these two scopes share any components (as Vixen definitely sold some Dai-Ichi Kogaku made scopes in the 70s and 80s ...)

 

https://www.cloudyni...60mm-refractor/


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#3 shredder1656

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Posted 26 July 2018 - 10:03 PM

Awesome looking scope. Very nice
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#4 Marcus Roman

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Posted 27 July 2018 - 07:51 AM

Thanks Ranger! It seems really an Ichi Kogaku old 80/560......


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#5 Marcus Roman

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Posted 27 July 2018 - 07:53 AM

http://www.daiichiko...seihin80mm.html


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#6 Defenderslideguitar

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Posted 27 July 2018 - 12:44 PM

welcome aboard

 

very nice find

 

good luck with it



#7 terraclarke

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Posted 28 July 2018 - 09:47 AM

Very cool scope! What a great grab and go that would make on a Vixen Porta Mount.waytogo.gif



#8 Marcus Roman

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Posted 28 July 2018 - 02:01 PM

Yap! Thanks! Yesterday night I was comparing the view of the moon with my Nexstar 8 GPS and my son and some gusests liked more the still image of this small refractor!! To be a short focal and a 80mm D it gave very contrasted images with just a thin (very thin) red rim around the moon.

It is very light and can be my "grasp and go" scope! Also on Mars at 120x was nice...I'll try soon with a short focal eyepiece, a Radian 3mm, and let's see what happens.

Sure it's not a Taka (I have an FS102 which I do love) still It's enjoyable for its portability...smile.gif Those guys from Ichi Kogagku were used to make very fine lens...

Clear skies.

Marcus


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#9 mr.otswons

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Posted 13 August 2019 - 07:05 AM

Hi,

Have you sold this one or did I find another? Have been watching Jupiter, Saturn, Moon and some double stars all summer. Very cool scope. Very bad tripod. What is your mount for this one?


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#10 Chuck Hards

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Posted 13 August 2019 - 07:39 AM

A couple of decades ago I purchased two of the Vixen 80mm f/7 objectives.  Built a scope for a friend with one of them, still have the other.  A remarkable objective, very little color for an f/7 achromat, and tack-sharp.


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#11 Marcus Roman

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Posted 13 August 2019 - 02:11 PM

Hi,

Have you sold this one or did I find another? Have been watching Jupiter, Saturn, Moon and some double stars all summer. Very cool scope. Very bad tripod. What is your mount for this one?

I adapted a Vixen dovetail and mounted it on a AZ GTI...very light scope, less than 1,5kg, and chromatic aberration is very limited for a f7 achromat. Think the good of the lens plays big role, they were made by Dai Ichi Kogaku from what I understand.


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#12 Marcus Roman

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Posted 13 August 2019 - 02:19 PM

I adapted a Vixen dovetail and mounted it on a AZ GTI...very light scope, less than 1,5kg, and chromatic aberration is very limited for a f7 achromat. Think the good of the lens plays big role, they were made by Dai Ichi Kogaku from what I understand.

Also, I did not sell it, you found another....seems rare anyway...


Edited by Marcus Roman, 13 August 2019 - 02:20 PM.

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#13 wfj

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Posted 14 August 2019 - 10:14 PM

Great find. The only achromat classic 80/560mm that I knew so far is the one from Dai-Ichi Kogaku. Not sure if these two scopes share any components (as Vixen definitely sold some Dai-Ichi Kogaku made scopes in the 70s and 80s ...)

 

https://www.cloudyni...60mm-refractor/

There also are Nippon Kogaku binocular objectives - they are slightly oversized (they don't fit in usual 80mm lens cells) and are MgF2 coated on all sides. For military range binoculars.



#14 mr.otswons

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Posted 16 August 2019 - 06:17 PM

I adapted a Vixen dovetail and mounted it on a AZ GTI...very light scope, less than 1,5kg, and chromatic aberration is very limited for a f7 achromat. Think the good of the lens plays big role, they were made by Dai Ichi Kogaku from what I understand.so

So I found another one, great! Maybe you would post a picture with the dovetail and the mount?



#15 Marcus Roman

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Posted 17 August 2019 - 05:57 AM

IMG_3261.JPG

 

So I found another one, great! Maybe you would post a picture with the dovetail and the mount?

Here it is! Can I ask you which dew shield you adapted to it? I can't find one.

According to the original owner I bought it from, this Sky Scope is a 1974 model....


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#16 mr.otswons

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Posted 17 August 2019 - 06:05 AM

attachicon.gif IMG_3261.JPG

 

Here it is! Can I ask you which dew shield you adapted to it? I can't find one.

According to the original owner I bought it from, this Sky Scope is a 1974 model..

Looking good! I have only the original dew shield, if you mean the white tube on the end. Or do you mean the cap? My cap is a plastic round box from shrimps, with some tape inside to get a tight fit. The scope is not with me, I'll post a picture when it's back.


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#17 Marcus Roman

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Posted 17 August 2019 - 06:12 AM

Looking good! I have only the original dew shield, if you mean the white tube on the end. Or do you mean the cap? My cap is a plastic round box from shrimps, with some tape inside to get a tight fit. The scope is not with me, I'll post a picture when it's back.

Right, I meant the dew cap! And you know what? I also am using a plastic round cap from a food box  with some tape inside to keep it tight to the dew shield (which is original)!

There is some "quantistic-resonance" between us ...:-)


Edited by Marcus Roman, 17 August 2019 - 06:14 AM.

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#18 mr.otswons

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Posted 17 August 2019 - 06:15 AM

Hehe



#19 mr.otswons

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Posted 18 August 2019 - 07:03 AM

Have you kept the 0.965 ep's? Or adapted a 1.25 ?



#20 Marcus Roman

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Posted 18 August 2019 - 08:21 AM

Have you kept the 0.965 ep's? Or adapted a 1.25 ?

I'm using a Takahashi star diagonal 0.965" and Taka MC OR eyepieces....sharp! Jupiter shows clearly Seb and Neb and some other fine details at 150x, with some minor colour fringe.

My benchmark for 3" refractors is my Vixen FL80s apo and I have to say Vixen Sky Scope, though cannot reach the quality of views of the Vixen apo, can make you get fun with a super grab and go light instrument!

Sky Scope 80 has good lenses though tube is poor plastic....my humble opinion.


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#21 mr.otswons

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Posted 19 August 2019 - 12:32 AM

I guess those improvements are bought in an aftermarket? When I was looking for ep's and diagonal improvements I saw a Zeiss eyepiece for 60 euros. Do you think it's worth it? Have bought some cheap ep's from an astroshop in Berlin, but they were mostly cra. besides a 12 mm. Almost want to send them back.



#22 Marcus Roman

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Posted 19 August 2019 - 06:47 AM

Yes, I bought the star diagonal and eyepieces 0.965" in the used market, a specilaised market for astronomy like CN's Classifieds.

But you can choose modern 1.25" diagonal and eypieces adapting them to the tube through the right visual back (easy to find).




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