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Heidenhain Newtonian Reflector

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#1 Terra Nova

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Posted 13 September 2020 - 11:22 AM

I find this Heidenhain Newtonian Cassegrain just an exquisite looking telescope. Until it was posted in the eBay thread yesterday, I had never heard of one. It’s basically a 6” F5 (150mm x 700mm), and looks quite heavy for its size. The precision machining, finishing touches, and industrial design look very Zeissish And I love the Victorian-green fork mount and tripod. It reminds me a bit of the Fecker Cassegrains of similar size. It’s quite high priced for a scope of it’s size. Anyway, it’s so unique that I thought it deserved a thread of it’s own with some pictures preserved for posterity when the eBay thread disappears after it’s sold.

 

https://www.cloudyni...ads/?p=10499363

 

https://www.ebay.de/...mCondition=3000

 

Does anyone here know anything about these?

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Edited by Terra Nova, 13 September 2020 - 11:24 AM.

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#2 Terra Nova

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Posted 13 September 2020 - 11:23 AM

Here’s the name/info plate on the drive box:

 

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#3 clamchip

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Posted 13 September 2020 - 11:31 AM

She's a doll, but can she cook?

I suppose anything that looks that nice can cook.

 

Robert


Edited by clamchip, 13 September 2020 - 11:33 AM.

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#4 petert913

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Posted 13 September 2020 - 11:39 AM

The same Heidenhain that makes encoders?  Should be stupendous quality in that case. 



#5 B 26354

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Posted 13 September 2020 - 11:40 AM

It reminds me a bit of the Fecker Cassegrains of similar size.

waytogo.gif



#6 Taosmath

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Posted 13 September 2020 - 11:51 AM

The thing that struck me about the photos was not one of them shows the optics.

 

Admittedly the mechanics are a thing of beauty, but I always want to look at the optics (or is that a US peculiarity?).



#7 Russell Smith

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Posted 13 September 2020 - 03:15 PM

The setting circles could use some contrast. One fuse is missing. I see no power cord or control pad.
Also, 220v 50 Hz.
It is pretty.

#8 luxo II

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Posted 13 September 2020 - 08:52 PM

The setting circles could use some contrast. One fuse is missing. I see no power cord or control pad.
Also, 220v 50 Hz.
It is pretty.

Very "old-school" - it probably never had a control pad or handset - "220V 50Hz" implies it has a synchronous motor and was connected to the AC mains, so a simple fixed speed tracker. No declination drive either - not even slow motion.



#9 Kasmos

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Posted 14 September 2020 - 04:19 AM

Base label info

 

Gerat-Nr (Device No.) 526

 

Hauptspiegel-Nr (Main Mirror No.) 29


Edited by Kasmos, 14 September 2020 - 04:20 AM.

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#10 Paul Sweeney

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Posted 14 September 2020 - 06:58 AM

This is the same Haidenhain that makes encoders. Anyone familiar with CNC milling or turning machines will know the company.

Normally, over here in Germany people also show the optics in ads, so I assume the seller inherited it and is selling it, but knows little about it. The ad says it is a classic scope from the 60's in top condition. It weighs 60kg and can be picked up in Stuttgart.

It is rather an interesting scope. It has a balancing weight below the mirror, a peep sight and a sliding focuser. I assume the silver knob on the fork base is for manual control in RA. I also see no power cable, bu over here power cables can be detachable. It is also not clear if the Cassegrain option is included. I see no focuser on the bottom of the tube, but it might use a diagonal of some sort for viewing like a newton. That could explain the sliding focuser.

I have visited the manufacturer's website and looked through all the German sites I could find, but I have turned up nothing on this scope.

#11 Senex Bibax

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Posted 14 September 2020 - 10:39 AM

Newton- Cassegrain? Does that mean you can configure it as either a Newtonian focus as shown, or Cassegrain focus through a hole in the primary?



#12 starman876

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Posted 14 September 2020 - 11:01 AM

https://spie.org/con...instrumentation

 

This company is part of the Heidenhain empire



#13 Paul Sweeney

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Posted 14 September 2020 - 11:03 AM

I assume it is similar to the Tak CNC212.

My friend Armin has reported that Haidenhain had a very good reputation for making top quality telescopes. He has never looked through one, though.

#14 Piggyback

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Posted 20 September 2020 - 12:03 PM

IMG_0668.JPG

 

Heidenhain 100/1000mm Newton with ex german chancellor Ludwig Erhard. Scope came with a strange cable mechanism to switch view between a 20mm finder and main scope. Fork mount with 220V synchronos friction motor drive. It utilized a strange eyepiece format, 23,5mm. The 100/1000mm cost 2500 Deutschmark in the late 1960's, the price of a factory new VW bug.

info courtesy J. Schmoll.


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