Conoscopic

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wstenberg
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Conoscopic

#1 Post by wstenberg » Sun Nov 04, 2018 8:22 pm

I am trying to attach a Fedorov stage on a Zeiss WL stand. Seem like it should be easy. Everything fits mechanically, but not all at the same time. I'm about an inch short of everything fitting, by the time I add the objective and condenser.

Question: Is there supposed to be a spacer between the base and arm to lift everything up an inch or so?

Any good resources for conoscopic microcroscopy?

Appreciate any advice to help me get started!
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William
Astoria, Oregon

Zeiss Axiomat
Zeiss Stereomikroskop
Zeiss Tessovar

MichaelG.
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Re: Conoscopic

#2 Post by MichaelG. » Sun Nov 04, 2018 9:31 pm

Nice Stage !!

The Wikipedia page looks a good place to start:
https://en.m.wikipedia.org/wiki/Conoscopy
and the external link therein:
http://gemologyproject.com/wiki/index.p ... #Conoscopy
has its own links ...

MichaelG.
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75RR
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Re: Conoscopic

#3 Post by 75RR » Sun Nov 04, 2018 11:07 pm

Found a little history on the Fedorov stage: https://minersoc.org/pages/Archive-MM/V ... 09-150.pdf


As to fitting it on a WL ... not sure that a spacer under the arm would make any difference as I think the focusing block is near full movement already.

Then again you could easily test if it would work by resting the arm on the edge of a book and seeing if that provides more room.

Removing the arm from the base is straight forward, it is only held on by 4 bolts.


I wonder if a GFL might not be better as it is designed to have the arm move rather than the stage.

If you ask I am sure members with one will provide you with the measurements you need to see if the Ferorov stage will fit on it.
Last edited by 75RR on Mon Nov 05, 2018 9:09 am, edited 1 time in total.
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)

MichaelG.
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Re: Conoscopic

#4 Post by MichaelG. » Mon Nov 05, 2018 7:55 am

Thanks for the interesting link 75RR

Must say that I was rather amused by:
It is a curious fact that the four-axis stage was used almost from the beginning, though it was for some time known as the three-axis stage.
MichaelG.
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75RR
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Re: Conoscopic

#5 Post by 75RR » Mon Nov 05, 2018 10:42 am

Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)

wstenberg
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Re: Conoscopic

#6 Post by wstenberg » Tue Nov 27, 2018 2:07 pm

Thanks all for the help and suggestions. I tried it on a GFL stand as suggested (and as shown in the photos) and it seems to fit fine. It probably was designed for the GFL stand.

I have heard of people inserting a machined part into the Standard WL or Universal stand to make it work. It needs about one inch more clearance!

I would like to have it set up so that I can take photographs of the conoscopic images.
William
Astoria, Oregon

Zeiss Axiomat
Zeiss Stereomikroskop
Zeiss Tessovar

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