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85cm Zeiss travelling Telescope

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36 replies to this topic

#26 starman876

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Posted 16 August 2023 - 09:17 AM

Those slow motion cables must be hard to find.


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#27 jragsdale

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Posted 16 August 2023 - 09:32 AM

Those slow motion cables must be hard to find.

Mine only came with one slow-motion cable, but mine also didn't come with the azimuth mount base and tripod so I had to improvise my own.

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#28 starman876

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Posted 16 August 2023 - 09:49 AM

Mine only came with one slow-motion cable, but mine also didn't come with the azimuth mount base and tripod so I had to improvise my own.

do you still have that scope?



#29 jragsdale

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Posted 16 August 2023 - 10:07 AM

do you still have that scope?

I do! Some of the acquisition and restoration details here: https://www.cloudyni...ling-telescope/



#30 starman876

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Posted 16 August 2023 - 10:12 AM

I do! Some of the acquisition and restoration details here: https://www.cloudyni...ling-telescope/

Interesting. I have the same looking tripod hub on one of mine.



#31 mcwolfson

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Posted 19 February 2024 - 10:14 PM

Hello -- I'm new to this thread and older refractors, 

 

I just acquired a Zeiss 60mm f=85 cm partly brass cell objective, Nr 12514 E (not B).  What is the difference between the E and B objectives? 

 

I also have 3 eyepieces: 21x, 47x, and 94x, and possibly the porro prism shown in Dave Trott's video.

 

If the optics are good enough, I could build this into a (not so beautiful) functioning telescope.

 

The video also mentioned something about the M44 threads not being standard, if I recall.  What is this about?

 

Thx -- Michael



#32 jragsdale

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Posted 20 February 2024 - 02:38 AM

What is the difference between the E and B objectives? 

 

The video also mentioned something about the M44 threads not being standard, if I recall.  What is this about?

E is a doublet, B is a triplet.

 

The older Zeiss has M44 x 0.9mm threads on the drawtube/porro/diagonal where the newer ones are M44 x 1.0mm.



#33 starman876

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Posted 20 February 2024 - 08:12 AM

E is a doublet, B is a triplet.

 

The older Zeiss has M44 x 0.9mm threads on the drawtube/porro/diagonal where the newer ones are M44 x 1.0mm.

interesting fact about the threads.   Does anyone know of a adapter that will allow one to use the newer thread on and older OTA.  



#34 Astrojensen

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Posted 20 February 2024 - 09:24 AM

interesting fact about the threads.   Does anyone know of a adapter that will allow one to use the newer thread on and older OTA.  

The newer ones can be used, they just don't thread all the way in. 

 

 

Clear skies!

Thomas, Denmark



#35 skysurfer

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Posted 20 February 2024 - 09:33 AM

They call it 'traveling telescope'. Probably meant for the few in the 1920s who could afford a car. Air travel did not exist (well, KLM started commercial short haul flights in 1920) and train travel was the best option for lugging the large (and heavy !) wooden box along.


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#36 starman876

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Posted 20 February 2024 - 09:50 AM

The newer ones can be used, they just don't thread all the way in. 

 

 

Clear skies!

Thomas, Denmark

Hi

 

Yes, I see they thread partially in, but it makes me nervous that it is not all the way in.    Do you know if anyone ever offered an adapter?



#37 mcwolfson

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Posted 09 March 2024 - 04:43 PM

Hello Again -- Here are some photos of this new to me Zeiss 60mm f= 85cm E objective, porro prism, two brass gizmos, and Kellner'sches f=40mm okular.

 

On reflection, I'm not inclined to build these components into a working telescope.

 

So if I were to offer these for sale, what is a reasonable asking price?

 

Clear skies -- Michael

Attached Thumbnails

  • zeiss 60mm a2.jpg
  • zeiss 60mm b.jpg



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