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Unitron 80mm spotting scope

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31 replies to this topic

#26 Trevor Cosby

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Posted 25 June 2022 - 10:10 AM

As the back plate being about 6 mm in thickness, with no sign on the inside of the turret plate of the focus tube .You would look at a very fine thread that would have to stay in place with no grub screw or locking ring that would have to resist the turning force when changing the turret eye position. 

 

With all the above said maybe this modle was never meant to have a star diagonal or straight through eyepiece. 

 

I still believe that I haven't fell on the  the right answer, as an ex engineer these were the sort of problems I liked and always found a solution to.

 

Well one more strop down next week, will let you know what I find.

 

Can some one tell me how to add photos, I was unsuccessful last time I tried 

 

As always many thanks for all your help.

 

Regards

 

Trevor 



#27 mdowns

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Posted 25 June 2022 - 12:04 PM

Trevor,in your reply text box look down at the bottom right and choose 'more reply optionsScreenshot 2022-06-25 12.53.44 PM.png

 

Next,look to the left side of the text window and hit 'choose file' Screenshot 2022-06-25 12.54.09 PM.png

 

Then pick a file from your computer and hit 'attach this fileScreenshot 2022-06-25 12.55.47 PM.png

 

finally go back to the right side of the text window and click 'add to post'  Screenshot 2022-06-25 12.56.31 PM.png

 

Files need to be smaller than 500kb to be loaded here



#28 Trevor Cosby

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Posted 25 June 2022 - 12:41 PM

Hi

Many thanks, that's great a very good explanation.

Regards

Trevor

#29 Stew44

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Posted 25 June 2022 - 01:17 PM

The knurled ring looks to be threaded and bonded onto the turret.  It comes right out of the draw tube without much effort on mine.  

 

P6250093.JPG

P6250094.JPG

P6250095.JPG

 


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#30 Stew44

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Posted 25 June 2022 - 01:18 PM

But Unitron does things differently and I have no idea what might be adapted to the drawtube at this point.  Here is a .965 nose piece.  Certainly smaller than the diameter of the drawtube as to the threaded end.

 

P6250096.JPG


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#31 Stew44

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Posted 25 June 2022 - 01:41 PM

But Unitron does things differently and I have no idea what might be adapted to the drawtube at this point.  Here is a .965 nose piece.  Certainly smaller than the diameter of the drawtube as to the threaded end.

 

P6250096.JPG



#32 Trevor Cosby

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Posted 25 June 2022 - 01:54 PM

As you can see on previous photos mine is not like this, and I think it may have been a lower cost when new then yours

I agree about the focus tube, a can't see that it was meant to have a diagonal or have a straight through ability to have a single eyepiece.

 

I only paid £20 for it and just have too except you get what you pay for, and yes I did get it for a good price.

 

The only question is do you know how to remove the front lense for cleaning?

 

Many thanks for all your help, if I want one like yours I will have to wait until one comes up.

 

As always many thanks.

 

Trevor 

 

 

 




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