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Polarex 75mm 1200mm

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#1 photiost

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Posted 08 April 2021 - 03:02 PM

Just picked up this Polarex 75mm 1200mm in good condition. 

 

 

 

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#2 photiost

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Posted 08 April 2021 - 03:06 PM

From the busy end... only one focuser knob.

 

Early 1960's ?  

.

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Edited by photiost, 08 April 2021 - 03:07 PM.

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#3 ccwemyss

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Posted 08 April 2021 - 03:12 PM

The alt-az scopes had one knob. Equatorials had 2. The plastic knobs could indicate early to mid 60's.

 

Chip W. 


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#4 sg6

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Posted 08 April 2021 - 03:15 PM

That looks like hours of fun.


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#5 photiost

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Posted 08 April 2021 - 03:32 PM

some accessories

.

 

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#6 Bonco2

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Posted 08 April 2021 - 03:34 PM

Very nice. I love mine.

bill


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#7 blakestree

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Posted 08 April 2021 - 03:35 PM

So cool!


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#8 photiost

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Posted 08 April 2021 - 03:44 PM

instruction manual:

-

 

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#9 PawPaw

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Posted 08 April 2021 - 05:07 PM

Photiost.....Phenomenal..... Polarex waytogo.gif

 

Have you had first light yet?  How does the objective look?

 

Cheers

 

Don


Edited by PawPaw, 08 April 2021 - 05:07 PM.

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#10 photiost

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Posted 08 April 2021 - 05:32 PM

Thanks Don.

 

Objective looks good, no fungus or scratches no evidence that it was ever removed. 

 

Telescope was not used very much, it sat in the basement for many years.

 

I will be taking it out this evening for first light.

 

Surprisingly ... new scope and its clear !!  

.

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Edited by photiost, 08 April 2021 - 05:35 PM.

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#11 starman876

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Posted 08 April 2021 - 05:37 PM

very nice scope.  Congrats on a fine find.


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#12 oldmanastro

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Posted 08 April 2021 - 06:40 PM

Great catch! It looks wonderful. Enjoy!


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#13 Defenderslideguitar

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Posted 08 April 2021 - 08:40 PM

sweet    love the longfellow Unitrons....Your Polarex looks to be in fine condition   great find

 

I love mine

Mine is the Unitron 140    1959    the alt az mount is easy and believe it or not   it is kind of a long grab and go......

 

Later on I added a 142 mount so it goes both ways


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#14 Terra Nova

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Posted 08 April 2021 - 08:47 PM

“...so it goes both ways.”

 

We used to call that AC/DC! :lol:


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#15 starman876

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Posted 08 April 2021 - 09:00 PM

“...so it goes both ways.”

 

We used to call that AC/DC! lol.gif

I always called it greedy lol.gif



#16 Piggyback

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Posted 09 April 2021 - 01:20 AM

That feeling of anticipation gives me a kick everytime. It will go well. Fastener screws aligned with shims. Good indication optics were not messed with.


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#17 CHASLX200

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Posted 09 April 2021 - 05:35 AM

Still waiting for one to pop in close to me. I had the RFT version years ago but always wanted a pre 1965 3" Unitron.


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#18 LukaszLu

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Posted 09 April 2021 - 05:36 AM

It is unbelievable that there are basements in the world that hide such treasures! Pure Beauty!


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#19 photiost

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Posted 09 April 2021 - 06:22 AM

Took the 75mm Polarex out last night, set it up in the back yard before supper and let it cool off - first light with this telescope was the Trapezium with the supplied 25mm which gives a magnification of 48x .  All 4 components showed up beautifully.

 

Castor easy split and tack sharp, this sample has a good lens.

 

I spent some time on Polaris, trying out the various eyepieces, it' faint double was easily seen. 

 

Globular clusters M68 and M5 showed up nicely. 

 

Will cleanup and re-grease the mount, noticed one of the metal spikes on the legs is missing.

.

 

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  • metal spike.jpg

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#20 LukaszLu

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Posted 09 April 2021 - 07:37 AM

Metal spikes are not necessarily a blessing if you have wooden parquet ... I had to make wooden protectors because the spikes cut the floor leaving visible holes. I used old wooden elements from the window blind, painted them black and put a piece of felt inside- thick enough that the wooden cap would get stuck on the metal spike.

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#21 Senex Bibax

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Posted 09 April 2021 - 08:22 AM

Sweet! Hidden treasure from a Montreal basement.


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#22 mattyfatz

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Posted 09 April 2021 - 08:56 AM

That’s a beautiful scope. Great find!


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#23 photiost

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Posted 09 April 2021 - 09:53 AM

Metal spikes are not necessarily a blessing if you have wooden parquet ... I had to make wooden protectors because the spikes cut the floor leaving visible holes. I used old wooden elements from the window blind, painted them black and put a piece of felt inside- thick enough that the wooden cap would get stuck on the metal spike.

Great idea !!


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#24 Defenderslideguitar

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Posted 09 April 2021 - 08:13 PM

We made little floor protector blocks for my Unitron 140 alt az tripod for my floors and for display at NEAF    see the small oak blocks in the pic

But when I got the late fifties Unitron 142 mount (thanks Terra); it already had these nifty white plastic nipple floor protectors on it

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Edited by Defenderslideguitar, 09 April 2021 - 08:14 PM.

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#25 photiost

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Posted 10 April 2021 - 04:48 AM

Cleaned it up a bit and re-greased the mount

This finder has dual (parallel) cross hairs.  

 

Edit:

Officially this is the Polarex  Model 129  (3″  Altazimuth Refractor) as described on Dave's Unitron History site here: 

https://www.unitronh...rex-model-129/ 

 

The Unitron Model 140 is more or less it's equivalent.

.

Attached Thumbnails

  • Polarex 75mm 1200mm aa crop2.jpg

Edited by photiost, 10 April 2021 - 05:37 AM.

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