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Equipment Discussions >> Classic Telescopes

Pages: 1
AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Towa CT-70 / Danubia RET-70 pictures !
      #5551951 - 12/03/12 12:32 PM Attachment (60 downloads)

Hello friends,

as I wrote here :
thsi seems to be a very rare scope. I have seen this scope only one time in germany in the last 10 years ! Today the scope arrived and I was very surprised about the big size of the mount ! In the discussion-link on top we got a few infos from Galakuma, but today as I saw the mount in real life, it was a big surprise to see its size. It's much bigger than I thought ! The scope is a 153/1300 mm catadiopt, and allthough a Cat, it is a very well built telescope on high craftmanship-level - no cheap trash !

The mount is bigger than a EQ5, the tripod very sturdy, and a nice thing is the rightangle finder in 6x30 with crosshairs.

I'm a bit irritated if this is really a classic : the german manual is from 1993 - the english manual is from 1984 ! On Galakumas nice web-page is a Towa catalog from 1995 there this scope is pictured as model Towa CT-70 !
For me most intersting is the mount. It has a few similarities with the Vixen New Polaris but it's much bigger !
Overall a surprislingly high-level catadiopt !

Lets see pictures !

Kind regars, Michael

Here the scope with classic friends :

Edited by AaronM (12/03/12 03:36 PM)


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5551955 - 12/03/12 12:33 PM Attachment (37 downloads)

Mount detail

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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5551959 - 12/03/12 12:35 PM Attachment (27 downloads)

fine engraved metal circles

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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5551965 - 12/03/12 12:36 PM Attachment (20 downloads)

Dec circle

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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5551969 - 12/03/12 12:37 PM Attachment (34 downloads)

The optical window !

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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5551989 - 12/03/12 12:41 PM Attachment (24 downloads)

The included eyepieces of good quality :
OR 18 mm, OR 9 mm, K 6mm, HM 25 mm Tasco de luxe barlow 2x

These are all 0,96" EP's, but the scope is allready fit for 1,25" EP's. You have only to unsrew the 0,96" EP-adaptor and then you get a barrel for 1,25" size EP's !

Edited by AaronM (12/03/12 03:39 PM)


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5551991 - 12/03/12 12:43 PM Attachment (24 downloads)

Mount esembly with tube cradles....for size comparison I have added a 9 V block-battery in the photo !

So far for the moment. I will add more infos in the next days, if you interested !?

Kind regards, Michael from germany

Edited by AaronM (12/03/12 03:40 PM)


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desertrefugee
Carpal Tunnel
*****

Reged: 08/06/07

Loc: Arizona
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5552657 - 12/03/12 07:29 PM

Hi Michael,

I am certainly interested. The OTA itself bears a close resemblance to a couple of telescopes marketed in the United States under the Spectrum I and Tanzutsu names. They also were produced by Towa. But those I ha e seen were either 76mm or 114mm - both with the optical window.

I believe they're referred to as being of "Bird-Jones" design. While called catadioptic, the glass is not actually a corrector. It is flat glass. I believe there is a lens in the focuser.

You are right about the mount, though. It is very heavy. Enjoy it and keep us posted!


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: desertrefugee]
      #5553967 - 12/04/12 01:15 PM Attachment (19 downloads)

Hi Darrel,

thanks for your interest ! Here are a few more pics - at first a better picture for size comparison. I have put out my Celestron CAM Goto and pictured it side by side with the Danubia RET70 mount. You can see, that the Danubia mount is same size. Sturdiness is on GP-level too !

Michael


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5553972 - 12/04/12 01:17 PM Attachment (17 downloads)

Another detailed pic of the mount - the screw on the dec-housing is for attaching a motordrive-hub

Edited by AaronM (12/04/12 01:18 PM)


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5553976 - 12/04/12 01:20 PM Attachment (18 downloads)

prepared for using of a polarfinder-scope. But this item is nearly impossible to get !!! But I guess an EQ2 motor will fit, the motor that is pictured in the manual looks identy to the Tasco motor that was fitted with Tasco 10k or 11 T...

Edited by AaronM (12/04/12 01:20 PM)


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5553980 - 12/04/12 01:23 PM Attachment (15 downloads)

Nice detail in the OAZ. There is not only a "cheap" fixing-screw, but a brass clamping-ring to fix the eyepiece !

Kind regards, Michael


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5553995 - 12/04/12 01:26 PM Attachment (15 downloads)

I have replaced the latitude-alignmentscrew with another one, for better handling.

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galakuma
sage
*****

Reged: 05/19/07

Loc: Japan
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5557005 - 12/06/12 07:53 AM

Hi Michael.
That's beautiful one.

I think this product resembles the Vixen saturn type equatorial mount.

http://page11.auctions.yahoo.co.jp/jp/auction/n119195864


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: galakuma]
      #5557028 - 12/06/12 08:10 AM Attachment (15 downloads)

Hi Hiroki,
by the way : have you ever seen this scope in reöl life ?
Danubia R6 -I think it's same as the old Yamamoto SYW R6 ??
( I have permission from Doerr/Danubia to post this picture from an old catalogue )

Kind regards, Michael


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galakuma
sage
*****

Reged: 05/19/07

Loc: Japan
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5557058 - 12/06/12 08:35 AM

I think so,SYW R6.
The Yamamoto factory is a small maker.
SYW's telescope was combinned the parts of orijinal design and the parts of the other company.
There were some types also by the same model name.


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: galakuma]
      #5565800 - 12/11/12 11:54 AM Attachment (17 downloads)

Hello,

I have added now a picture from the nice brass wormwheel. I have to count the teeths.....

Michael


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: AaronM]
      #5565807 - 12/11/12 11:55 AM Attachment (14 downloads)

ready for modern 1,25" eyepieces..here with a 7-21 mm Eyepiece

Michael


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AaronM
professor emeritus


Reged: 02/02/06

Loc: NRW, Germany
Re: Towa CT-70 / Danubia RET-70 pictures ! new [Re: galakuma]
      #5568499 - 12/12/12 11:59 PM

Hello Hiroki,

well, these mounts are very similar - but : the Vixen Saturn is much stronger and has 40 mm shafts. The Kenko (??) mount has 30 mm shafts, but is indeed of nice craftmanship quality !

Kind regards, Michael


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