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Zeiss Telementor

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#1 starman876

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Posted 06 November 2012 - 08:24 PM

Thought you would all like to see a picture of one.

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#2 Darren Drake

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Posted 06 November 2012 - 08:29 PM

Cool. Napersky is gonna bring his out to my place sometime soon and I'm looking forward to looking through it.

#3 starman876

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Posted 06 November 2012 - 08:30 PM

here is a close up

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#4 starman876

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Posted 06 November 2012 - 08:37 PM

Check out this picture of the lens and how it just about vanishes and this is shot at an angle. This was with a flash.

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#5 Adam S

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Posted 06 November 2012 - 08:53 PM

It's a beauty, any idea as to it's age and how it compares with Japanese telescopes and mounts of the same era?

#6 starman876

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Posted 06 November 2012 - 09:00 PM

The optics on these are in a class of their own. The mounts are awesome and very precise to use. The peep sight for setting up on an object are a breeze to use. So simple that I am amzed they were not used more. These were built by Zeiss for schools to teach astronomy.

#7 starman876

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Posted 06 November 2012 - 10:22 PM

http://www.google.co...&tbo=u&tbm=i...

Look at this link of pictures of zeiss scopes.

when you click on more results the images are just amazing. This should keep most of you busy all night :roflmao:

#8 Copernicus1473

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Posted 07 November 2012 - 06:25 AM

I am new to the refractor world. I have seen ads for Zeiss Telementor I and a Telementor II. What is the difference? Is one better than the other? Are the pictures posted of the Telementor I or II? Since these scopes are not APO is there much false color when looking at brighter objects?
Thank you from a newbie looking to buy a classic refractor.

#9 Sasa

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Posted 07 November 2012 - 07:44 AM

Congratulation, this week I got Telementor as well. Originally, I was going to build a new OTA for the Zeiss C63/840 lens. But there was an opportunity to buy Telementor without the lens and I jump on it. I did not try it under the stars yet. The mount and its mechanics looks nice, I'm definitely curios how it will work under the stars.

#10 starman876

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Posted 07 November 2012 - 08:33 AM

That is a Telementor I. The difference is the focuser for one. The Telementor I has a helical focuser and the II is internal and moves the objective back and forth. Love those Germans for their eingineering and dedication to making high end optics.

#11 starman876

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Posted 07 November 2012 - 08:38 AM

which telementor OTA did you get. The lens fits inside the OTA in the first version that came out in the early 70's. The II version moves the lens assembly for focusing so is mounted very differntly. The Telementors that came out before both of these versions the lens actually screwed in and lens configuration was a flint foward assembly. The later Telementors are classic achromats. Can you post a picture of the lens?

#12 Copernicus1473

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Posted 07 November 2012 - 08:40 AM

Thank you. Having never looked through on of these great scopes is there much false color when viewing brighter objects?

#13 starman876

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Posted 07 November 2012 - 08:48 AM

To be honest I have not seen any color. This is a small high quality very smooth figure long focus lens so color should not be an issue. The first time used one I was looking at Jupiter and was amazed I could see such detail for such a small lens. And no violet haze.

#14 hpw

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Posted 07 November 2012 - 01:10 PM

Congratulations! Always a pleasure to see one of these beautiful Telementors. Especially the later T-mount version with the red and white knobs.

#15 Mike E.

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Posted 07 November 2012 - 01:17 PM

here is a close up


Hi Starman,

These are beautifully made scopes. My Wife and I were fortunate to acquire one reciently, however, have had little chance to use it with the bad weather here in the UK.

I notice in your photos that your mount doesn't seems to be supported all the way down on the tripod pintle. Our pintle is 2 3/4" long and fits into a 3" deep mount socket.

Here's a picture of ours for comparison.

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#16 Sasa

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Posted 07 November 2012 - 01:39 PM

Hello Starman876,

mine is Telementor II with internal focuser, the mount looks exactly like yours. I got the lens this summer from my friend. The OTA was very difficult to use:

http://www-hep2.fzu....840/C63_840.jpg

Still I had some fun with it, both on DSO (here) and planets:

http://www-hep2.fzu....ter_20121017...

The views through the lens were charming and it definitely deserved better OTA.

#17 starman876

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Posted 07 November 2012 - 01:41 PM

I noticed that also. Will check into that tonight. maybe just needs a little cleaning..

#18 starman876

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Posted 07 November 2012 - 01:45 PM

If you look at the picture from Mike E that is a telementor II. I think you have a Telementor that dates before mine which places it before 1970.

#19 Mike E.

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Posted 07 November 2012 - 02:20 PM

If you look at the picture from Mike E that is a telementor II. I think you have a Telementor that dates before mine which places it before 1970.


The lady we purchased it from, said she bought it new from her local camera shop around 1980.

#20 Mike E.

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Posted 07 November 2012 - 02:31 PM

I noticed that also. Will check into that tonight. maybe just needs a little cleaning..


Inside the mount socket, there is a recess in front of the locking screw which has a metal plate in it. The screw pushes the plate against the pintle to lock it in position. Perhaps the plate is not backed far enough into its recess to allow the pintle to seat; its a close fit.

#21 starman876

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Posted 07 November 2012 - 03:06 PM

Thanks, I will look at that tonight. I like the mount, however, it has been easier to grab the OTA and just use it for grab and go. I have a couple of these and I keep the mount and tripod packed up and stored.

#22 Sasa

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Posted 07 November 2012 - 03:11 PM

Starman, my Telementor looks exactly the same as Mike's one. I was posting the image of original homemade OTA that came with the lens. I put the lens into the Telementor right now. Now I need only clear sky!

#23 starman876

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Posted 07 November 2012 - 03:25 PM

Sasa

OK. thanks for clearing that up. You had me confused. :shrug:

#24 Mike E.

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Posted 07 November 2012 - 03:27 PM

Hello Sasa,

I like your sketches. :waytogo:

#25 Astrojensen

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Posted 07 November 2012 - 03:37 PM

Hello

The Zeiss Telementors were made from mid 1972, with a helical focuser, until around mid 1979, when they were replaced by the Telementor 2 (1979-1994), with the interior, crayford-style focuser, which only moves the objective. A very unique and brilliant design. Even very heavy accesories can be solidly attached to the rear end via the M44 threads. It has a bit more back focus than the Telementor 1. From around 1981, one could also buy the Telemator, which was a Telementor 2 with 7.5x42 finderscope and upgraded T mount (to model TM) with motor drive. These accesories could also be purchased separately, so one could upgrade older Telementors to motorized versions. The finderscope can be used on the Telementor 1, but doesn't fit well and is rather awkwardly placed on the helical focuser. It is primarily designed for the Telementor 2/Telemator.

Posted Image
Eighty years of Zeiss history. From right to left:
1910 Zeiss Reisefernrohr, 1972-79 Telementor, 1989 Telemator


The above image shows my three Zeiss 60mm's. The tripod on the 1910 Reisefernrohr is not original, but the Telementor and Telemator are 100% original. The Telementor doesn't have a tripod accesory plate/tripod brace, which is a major design flaw, IMO, since the legs can slip if the ground is slippery, from ice or such, and then the scope tips over. The OTA has a dent in the dewcap, so this has happened at least once in its past.

The C objective of the Telementor/Telemator series is a cemented achromat. Nothing fancy at all. I've seen two with a little astigmatism (one actually has quite a bit of it, it's the Telementor seen above) but the Telemator has a stunningly fantastic objective that will take 336x on double stars. What's scary is that the 1910 Zeiss is visibly better! I have since mounted a Zeiss dovetail on the Reisefernrohr, so that I can use it on my TM mount, which is a lot more stable than the original mount and has tracking to boot.

Posted Image

These are small scopes, for sure, but they have terrific optics, so they can show amazing things.


Clear skies!
Thomas, Denmark






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