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new scope 75mm f15

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#1 MER

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Posted 25 March 2021 - 09:05 PM

Seems this scope has a markers mark that might be uncommon.  Vintage 1960 It is a Sears model 6339 75mm The mark looks a lot like Royal Astro mark but with half of it not there

 

In a thread here on "The Comprehensive List of Japanese Symbols"

 

There it is identified as "And the Tasco Royal prior to changing to TOWA"

 

So, my question how does this OTA rank (optics wise) against the other circle marks. Near the near top or the bottom.

 

 

test 2.jpg

 

 

Many thanks 


Edited by MER, 25 March 2021 - 09:07 PM.

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#2 CharlieB

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Posted 25 March 2021 - 09:06 PM

Should be a superb scope.



#3 Garyth64

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Posted 25 March 2021 - 09:30 PM

It has the RAO mark.  The RAO lenses are excellent.

 

Can you show more pictures of the scope?


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#4 Terra Nova

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Posted 25 March 2021 - 09:33 PM

You got a great scope there. Enjoy!



#5 MER

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Posted 25 March 2021 - 10:33 PM

It has the RAO mark.  The RAO lenses are excellent.

 

Can you show more pictures of the scope?

 

It has the RAO mark.  The RAO lenses are excellent.

 

Can you show more pictures of the scope?

I would be happy to over the week end. A this point I do not have a mount for it or at least a vintage mount. I am looking for one. Thanks


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#6 apfever

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Posted 25 March 2021 - 11:10 PM

The symbol is a lighter stamping that didn't get the full die imprint. It is a normal RAO identifier that represents well above normal optical consistency and quality. 



#7 GreyDay

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Posted 26 March 2021 - 10:01 AM

So jealous! 3" R.A.O's just never come up for sale this side of the pond. great find :)



#8 JIMZ7

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Posted 27 March 2021 - 06:48 PM

Had a Edmund Scientific mid 60s...75mm

F/15 equatorial refractor. The white scope was flocked black inside completely. Came that way. Images were superb. Rumors were the objective lens was Nikon. Don't remember seeing any CA on Venus or Vega? 

Jim


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#9 rweisberg

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Posted 18 June 2022 - 09:21 AM

I got the same scope a month ago. The 6339 is RAO and has amazing optics. Looked this morning at Saturn and the moon. Amazing views for a 75mm, and view of the moon is the best I have seen with no CA. My serial number is 570080 (#80 made) and like yours, the makers mark is only about half there, but looks just like yours. It is a beautiful scope and one of my favorites. I also have the 90mm Sears RAO 6345. But it is heavy and more work to move out of my office into the yard. The 6339 is so much easier to set up. 

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#10 konrad

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Posted 18 June 2022 - 10:13 AM

Yes should be similar to my Tasco  for its size 75mm will be great


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