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Recognize the Quantum 4 OTA under all that?

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14 replies to this topic

#1 RichA

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Posted 09 February 2021 - 12:11 AM

http://www-es.ironpl...ylvania/3349030

 

Looks like a fun configuration.


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#2 TikiTom

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Posted 09 February 2021 - 12:45 AM

Check your link?  


Edited by TikiTom, 09 February 2021 - 12:46 AM.


#3 nowhere

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Posted 09 February 2021 - 01:59 AM

That's really a Quantum Mak underneath? Bushnell rifle scope attached to the tube, bunch of stuff that seem to be there to adapt it to camera use... and more too...



#4 luxo II

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Posted 09 February 2021 - 05:43 AM

Link worked for me... there are a couple of Davro M180 units going too, these are based on Questar optics but heavily modified fior surveillance.

#5 starman876

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Posted 09 February 2021 - 08:46 AM

Those units were sold last year.   Davro is the company that  is what came out of Quantum.  I still have the 8" version from those days.   The scope is the one on the right.

 

maks.jpg


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#6 Augustus

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Posted 09 February 2021 - 09:41 AM

Those units were sold last year.   Davro is the company that  is what came out of Quantum.  I still have the 8" version from those days.   The scope is the one on the right.

 

attachicon.gifmaks.jpg

How does it perform?



#7 starman876

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Posted 09 February 2021 - 10:19 AM

How does it perform?

Really well.  I had Cumberland put anti reflection coatings on the corrector and redo the secondary spot.  The primary was fine.   Cumberland stated that in all regards they considered it a Q8.  It was either made by Davro in the very beginning or by Quantum right at the end.  


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#8 RichA

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Posted 09 February 2021 - 12:14 PM

Really well.  I had Cumberland put anti reflection coatings on the corrector and redo the secondary spot.  The primary was fine.   Cumberland stated that in all regards they considered it a Q8.  It was either made by Davro in the very beginning or by Quantum right at the end.  

How are the optics in the eight?



#9 starman876

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Posted 09 February 2021 - 02:11 PM

How are the optics in the eight?

see post #7



#10 RichA

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Posted 09 February 2021 - 05:30 PM

Link worked for me... there are a couple of Davro M180 units going too, these are based on Questar optics but heavily modified fior surveillance.

180 would imply 7 inch units but I couldn't tell from the images exactly how large they were. 



#11 telescope200

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Posted 09 February 2021 - 06:13 PM

Been seeing those Davro Optical DOS 100MZ2X online in my recent trips down memory lane.  We started working on Quantum 4 scopes with "Quick Focus" (designated QF somewhere in its description) in the mid 80's (when I left Davro). These mass produced scopes are after my time. The wheel/knob on the side just pushes the focus rod (and the primary mirror) back and forth, letting it focus quickly.

 

Its Quantum 4 optics inside, dunno if you can get rid of the zoom set on the back and still reach back-focus. I note they gave up on the one piece Quantum cast aluminum control box for a thing made out of aluminum tubing and plates all bolted together.

 

These things were targeted at the police/Military//Fed/CIA surveillance market, hence why its painted black. Looks like a video/16mm C mount on the back, can probably be swapped out for other adapters.  Looks like you would have to mount an eyepiece further back to view that focal plane, or maybe get rid of the zoom optics.

 

Robert S


Edited by telescope200, 10 February 2021 - 11:53 AM.


#12 telescope200

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Posted 09 February 2021 - 06:27 PM

180 would imply 7 inch units but I couldn't tell from the images exactly how large they were. 

The 180's were 7". Cumberland made the optics (and maybe they were Questar 7' optics, I could never tell). The only possible difference would be the Davro optics had a primary focal plane well behind the OTA's back-plate and a further control box full of optical goodies..... meaning the primary/secondary could have a slightly different figure to work at that further back back-focus.

 

Robert S



#13 starman876

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Posted 09 February 2021 - 06:37 PM

The 180's were 7". Cumberland made the optics (and maybe they were Questar 7' optics, I could never tell). The only possible difference would be the Davro optics had a primary focal plane well behind the OTA's back-plate and a further control box full of optical goodies..... meaning the primary/secondary could have a slightly different figure to work at that further back back-focus.

 

Robert S

Cumberland most likely provided questar optics for a 7. Why make something new when they had all the tools for a 7"


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#14 RichA

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Posted 10 February 2021 - 01:40 AM

Here is an "automated" Q7 for surveillance.  It had built in barlows, compessors, filters and auto-focusing, a CCD camera.

 

 

Attached Thumbnails

  • Industrial Questar 7 for surveillance.jpg


#15 Gil V

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Posted 19 February 2021 - 09:50 PM

That 8” must weigh a ton! 😂

Edited by Gil V, 19 February 2021 - 09:50 PM.



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