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 Post subject: Microscope part help
PostPosted: Fri Jul 13, 2018 4:24 pm 
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Hello I have a zeiss nosepiece 5 hole turret and there seems to be a optic in the back that is not present in the back of my fathers standard 14 nosepiece when you remove the binocular tube
I have provided a picture to illustrate

Cheers Jeff


Attachments:
Nosepiece lens.jpg
Nosepiece lens.jpg [ 300.35 KiB | Viewed 677 times ]
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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 5:33 pm 
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Please check the Zeiss catalogue number on the other side of the part
But anyway I think that this part, with the telan lens, fits the Zeiss Universal microscope. Not the Zeiss Standard microscope. Does the dovetail on the part fit the corresponding dovetail on the head of your Standard?

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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 8:28 pm 
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There are some compatible parts between the Zeiss (Universal, Photomicroscope & Ultraphot) and the Standards, particularly the Standard WL.
However the nosepiece is not one of them.


Attachments:
Nosepiece.jpg
Nosepiece.jpg [ 19.85 KiB | Viewed 644 times ]

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Zeiss Standard WL & Wild M8
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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 8:58 pm 
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Thanks for the replies People, yes it is 47 31 59 9902
but what is a telen lens?

thanks 75rr


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Nosepiece lens.jpg
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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 9:05 pm 
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The Zeiss systems before the infinity Axio series were 160mm TL (Tube Length). The Telan lens is used to keep the optics at 160mm tube length.


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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 9:16 pm 
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so it was used to allow older objectives 160mm type to function on newer systems
BTW what is meant by the 5x prior the the word Telan


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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 9:23 pm 
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rs6000 wrote:
so it was used to allow older objectives 160mm type to function on newer systems
I suspect that the reason was to allow for additional optics between the nosepiece and ocular. Older Zeiss objectives would fit anyway since they were designed for 160mm tube length as well. But I might be wrong.

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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 9:26 pm 
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Hobbyst66 is right. The telan lens allows the system to stay at 160mm TL and not to be adaptable to newer systems.

The 5X indicates the turret has holes for 5 objectives.


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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 9:31 pm 
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Telan lenses (a negative and a positive) are used in (for example) 160 Tube Length systems to create an infinity space that allows additional components to be added to the optical path while maintaining the effective tube length of 160 mm that the objectives require.

I believe that that nosepiece has in fact two Telan lenses, a negative and a positive. This effectively takes the large size of this nosepiece out of the Tube Length (TL) calculation, keeping the total length at 160.

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PostPosted: Fri Jul 13, 2018 11:38 pm 
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Thank you Very much 75RR and all others you have answered my question to a TEE I would never have guessed that on my own This proves There is a LOT to learn about microscopy much more then you think at first. :D

BTW just got a scope from LABx in the MAIL and don't know the model# could be a 14 16 or 18 or WL ETC, my luck there is no model tag on bottom
One thing that is VERY NICE about this scope is the generously large condenser adjustment knobs wayy better then the STD 14 I was kohler adjusting for my father those tiny knobs gave me blisters
also has 2 swing out trays one has a lens in it, the condenser IRIS is multi bladed way more rounded then the 14 as well
and a prism on bottom for external lighting I suspect as there is no rheostat knob


Attachments:
bottom.jpg
bottom.jpg [ 205.81 KiB | Viewed 614 times ]
microscope.jpg
microscope.jpg [ 193.14 KiB | Viewed 614 times ]
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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 11:43 pm 
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You have the more desirable model 18, which has the exchangeable objective turrets.


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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 11:48 pm 
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WOW I thought it was a model 16 how did you know?
BTW and my transaction was 120$ plus shipping looks like a home run :D :D :D

It is in very good shape as well dont know about the lighting but if anybody has a zeiss catalog PDF with part#s for the model 18 that should get me going in the right direction in sourcing the parts ill need to complete this animal.


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 Post subject: Re: Microscope part help
PostPosted: Fri Jul 13, 2018 11:57 pm 
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The 18 has the changeable turret, the others except the WL, do not.

This will accept the 6V 15W in base lighting system.

Check your PM and I'll send you my email where I can send you a manual.


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 Post subject: Re: Microscope part help
PostPosted: Tue Jul 17, 2018 7:15 pm 
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Location: Germany, Karlsruhe
It is difficult to judge - it maybe also possible that it is the Zeiss Standard RA and maybe not the Standard 18. The RA was an older version before the Standard 18 with a thinner frame body and slightly different geometry of the arm. It has the old metal label with the Carl Zeiss label, also the iris diaphrama is made of metal not plastic (of coarse this is not a unique indicator for a RA).

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sincerely Jochen
My microscopes: Zeiss inverse IM35, Zeiss Standard (RA, WL, Universal, Junior), Stemi III
Youtube: https://www.youtube.com/channel/UCVio3U ... cg-Fm2su3w


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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 12:22 am 
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Jochen makes a good point. The early Standards, in which the RA was the first,have the Zeiss metal plate on the front of the base and do have the better 13 blade metal light port and iris. But, the only RAs I have seen, do not have the interchangeable objective turret. My RA, as you see the third from the left has the permanently mounted turret and I think 75RR also had a RA with the permanently mounted turret. Of course the limb or the turret/head holder could have been swapped out. A lot of the parts are interchangeable including whole limbs, bases, light port etc. So, it could be a RA or an 18. I have to admit, I changed out the plastic light port for the metal ones in the WL and 18 shown below.

Here is a picture from left to right, WL, 18, RA and 14:

Attachment:
Zeiss WL, 18, RA, 14 Left.jpg
Zeiss WL, 18, RA, 14 Left.jpg [ 84.77 KiB | Viewed 490 times ]


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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 12:32 am 
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Here is also a picture of the Zeiss RA from a document called:Carl Zeiss Standard Microscopes
Attachment:
Zeiss RA Picture.JPG
Zeiss RA Picture.JPG [ 119.25 KiB | Viewed 488 times ]


But of course they could have also made RAs with interchangeable turrets.


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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 2:39 am 
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MY Standard MAybe 18 does not seem not to have the knob to rotate a filter out inside the nosepiece was this only aval on a polarized version of the 18 or do all 18s have the rotation knob as I have seen some in lot of images on this site.

cheers


Attachments:
Standard 18.jpg
Standard 18.jpg [ 225.25 KiB | Viewed 477 times ]
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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 11:36 am 
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The flip in/out filter holder was an option for any of the Zeiss Standards from 14-18 and even WL.


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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 1:33 pm 
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What you have there is basically a bare bones frame. In other words a 'project' or a 'build'.
These take some time if done sensibly - as rushing is likely to increase the costs substantially.

Here is a link to a virtual build on a Zeiss Standard WL that posed many of the same challenges. You may find it useful.

http://www.microscopy-uk.org.uk/mag/art ... iss-WL.pdf

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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 3:53 pm 
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Thank you very Much 75rr that was a nice and expensive project though from what I have seen the WL base alone seems to be north of 400 striped!!! geezh


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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 4:00 pm 
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Charles are those olympus Eyepieces in the first scope in that lineup you posted I believe it is a WL


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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 7:23 pm 
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Location: Germany, Karlsruhe
Charles wrote:
But, the only RAs I have seen, do not have the interchangeable objective turret. My RA, as you see the third from the left has the permanently mounted turret and I think 75RR also had a RA with the permanently mounted turret.


Charles, my RA has a interchangeable obejective turret :-)
So the RA was built with both options.

_________________
sincerely Jochen
My microscopes: Zeiss inverse IM35, Zeiss Standard (RA, WL, Universal, Junior), Stemi III
Youtube: https://www.youtube.com/channel/UCVio3U ... cg-Fm2su3w


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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 7:26 pm 
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So how do you tell them apart any other distinguishing differences I can look for?


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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 7:31 pm 
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Location: Germany, Karlsruhe
Operation wise it does not make any difference if you own a Standard 18 or Standard RA. Both are great microscopes that can be fitted with exactely the same accessories and equipment. Just small details that are different.

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sincerely Jochen
My microscopes: Zeiss inverse IM35, Zeiss Standard (RA, WL, Universal, Junior), Stemi III
Youtube: https://www.youtube.com/channel/UCVio3U ... cg-Fm2su3w


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 Post subject: Re: Microscope part help
PostPosted: Wed Jul 18, 2018 8:37 pm 
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what are the differences to me it looks the same from the picture charles provided?


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 Post subject: Re: Microscope part help
PostPosted: Thu Jul 19, 2018 1:12 am 
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Charles wrote:
Jochen makes a good point. The early Standards, in which the RA was the first,have the Zeiss metal plate on the front of the base and do have the better 13 blade metal light port and iris. But, the only RAs I have seen, do not have the interchangeable objective turret. My RA, as you see the third from the left has the permanently mounted turret and I think 75RR also had a RA with the permanently mounted turret. Of course the limb or the turret/head holder could have been swapped out. A lot of the parts are interchangeable including whole limbs, bases, light port etc. So, it could be a RA or an 18. I have to admit, I changed out the plastic light port for the metal ones in the WL and 18 shown below.

Here is a picture from left to right, WL, 18, RA and 14:

Zeiss WL, 18, RA, 14 Left.jpg

what is the binoc tube in the 3rd one down dont recognize it.

cheers


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 Post subject: Re: Microscope part help
PostPosted: Thu Jul 19, 2018 1:16 am 
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Posts: 45
I have found several binocular assemblies and dont know much about them if anyone can shed some light on age or compatibility with the std 18 I would appreciate it well.

cheers


Attachments:
binocu.jpg
binocu.jpg [ 54.29 KiB | Viewed 376 times ]
binoccu.jpg
binoccu.jpg [ 59.03 KiB | Viewed 376 times ]
binocc.jpg
binocc.jpg [ 57.17 KiB | Viewed 376 times ]
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 Post subject: Re: Microscope part help
PostPosted: Thu Jul 19, 2018 6:28 am 
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The bottom photo is the older bino head, eyetubes are inclined at 45 degrees, and both interpupilary distance and individual setting of focus for each eyepiece are mechanically separate, so both must be performed to keep the optics at the proper 160mm tube length. It fits the old Zeiss Standard models - the black ones and some of the gray ones.
The top and middle photo are more modern, I think they are named Seidentopf heads (after the inventor). I think they fit all older Zeiss models (Standards, GFLs, Universal) but I might be wrong. The eyetubes are inclined at an angle of 30 degrees (more towards horizontal). I am not sure about the details of the interpupilary distance setting.

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 Post subject: Re: Microscope part help
PostPosted: Thu Jul 19, 2018 10:43 am 
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rs6000 wrote:
Charles are those olympus Eyepieces in the first scope in that lineup you posted I believe it is a WL

Yes, those are Olympus eyepieces. They work quite well for correction with Zeiss objectives but I later switched them to Zeiss KPLs.


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 Post subject: Re: Microscope part help
PostPosted: Thu Jul 19, 2018 11:03 am 
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rs6000 wrote:
I have found several binocular assemblies and dont know much about them if anyone can shed some light on age or compatibility with the std 18 I would appreciate it well.

cheers


The first one is used for the larger Universals and Photomicroscopes. They could be used on the smaller Standards but the eyepiece tubes will point differently and may not be at a comfortable viewing angle.

The second is used on large inverted microscopes such as the IM 35 and ICM 405. You can put them on a smaller standard but again, the viewing angle may not be comfortable.

The third can be used on most any Zeiss 160mm TL scopes from Universals to smaller Standards.

If you plan on doing micro-photography, you may want to look for a trinocular viewing head like these examples:
https://www.ebay.com/itm/Zeiss-Microsco ... 7675.l2557
or
https://www.ebay.com/itm/Carl-Zeiss-Tri ... 7675.l2557

The first one is a better option because it gives you different views from eye tube to photo tube and adjustable photo tube to get the view parfocal with the eye tube, but is more expensive.

The second one, you pull/push the knob in front for just eye tube view or just photo tube view, and the photo tube is fix and can not be adjusted to get the view parforcal.


Last edited by Charles on Thu Jul 19, 2018 11:08 am, edited 1 time in total.

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