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Info needed on Tal (Novosibirsk) MT-3S mount

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#1 Andy Howie

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Posted 21 March 2009 - 07:44 AM

Hi.
I'm in need of some info on the following mount from Tal in Novosibirsk, Russia.

I have this mount on order and need to make an alluminium plate to fit on top of the dec axis, which will then hold a saddle clamp.
I therefore need the following.
1/ The size(length and width)of the dec mounting plate.
2/ The spacing between the 2 threaded thumbscrews,centre to centre.
3/ Size of the thumbscrews, eg: M6, M8 ??

Many thanks,
Andy.

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#2 little_ hubble

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Posted 24 March 2009 - 05:26 AM

hi, andy

seems, you discovered a source of supply for the extremely rare tal scopes. may i ask,where?
i´m desperately searching for a mt3-s pier. in return i´ll give you the dimensions tomorrow. here´s a link for now:

http://www.astrowiki...s&printable=yes

use google translator

greets, martin

#3 Andy Howie

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Posted 25 March 2009 - 04:41 AM

Danke Martin.
This company in England have some in stock. Link below.

http://www.widescree...mputerized.html

It is a package of the MT-3S mount and the wooden Tal tripod. I'll be mounting mine on a steel pier eventually.
I already have the big Tal mount(Tal 2M), on a 5ft steel pier,
Posted Image

I have always wanted this MT-3S, but could never find one. At the price offered, I couldn't say no, especially as the supplied tripod is on sale in the UK at £80 !


Cheers,
Andy.

#4 little_ hubble

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Posted 25 March 2009 - 08:20 AM

here´s your link with the drawing + thanks for your help. scroll down a little bit. and: there´s a (sophisticated) atm mounting plate design on the next page. i´ll post the width of the plate in the next few hours.

http://www.npzoptics...pic=5809&st=120

npzoptics = tal. yes, google translator ; )

greets, martin

#5 little_ hubble

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Posted 25 March 2009 - 12:23 PM

plate width ist 66.5 mm

there´s another option:

detach the plate and attach a dovetail adapter:

http://www.teleskop-...llkupplung.html

should fit, spacing between the holes (tal) is appr. 36mm. the adapter has 35mm. 0.5 mm per side, a little drilling will do. there´s enough space for the adapter.

greets, martin

#6 Andy Howie

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Posted 25 March 2009 - 12:46 PM

Thanks again Martin.
I have that very dovetail adapter and have thought of doing that also.

Cheers,
Andy.

#7 Andy Howie

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Posted 30 March 2009 - 11:09 AM

Well the mount arrived. Very pleased with it.
Would you believe that the Tal 200K scope already comes with a huge dovetail, that fits the mount head perfectly.....fantastic.
I'll still make up another adapter so my other scopes can be used on it too.
Thanks for your help anyway Martin. Interesting link to the Tal Russian forum. Lots of useful info on there, after running it through a translator.
Some pics,

Posted Image

Posted Image

Posted Image

Posted Image

Cheers,
Andy.

#8 Andy Howie

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Posted 30 March 2009 - 11:56 AM

Just made up an adapter to hold the Telescope service saddle on the Tal MT-3S mount. This will let me use my other scopes with standard dovetails on this mount too.
A T-S dovetail I had, has the perfect hole spacing to fit the MT-3S mount. I only needed to thread the holes M8. The saddle needed 2 holes, again threaded M8.
Posted Image

Posted Image

Rather pleased. :)

Will the weather cooperate now :question:

Cheers,
Andy.

#9 little_ hubble

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Posted 31 March 2009 - 03:24 PM

dear sir, from now on you´re an official member of the cloudy nights tal-clan ; ) gathering will be complicated, though. nicely done!

greets from ger, martin

#10 Mert

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Posted 31 March 2009 - 03:35 PM

Sure looks great, mount and scope!

If weather and time permit, would you be in for posting a
PErecording of this mount?

Clear skies,

#11 rnabholz

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Posted 01 April 2009 - 02:33 PM

I'll still make up another adapter so my other scopes can be used on it too.


Andy,

I had that mount for a time, I used it for a 4" f15 refractor.

For a mounting plate, I used a pretty simple approach. I simply made a plate out of 1" maple (any good hardwood will do), drilled holes in the plate to match the mounting holes on the top plate of the mount. I then attached that to the mount with a couple of bolts through both of them secured by a nut. I fit the nuts into a wooden knob with epoxy.

Painted black id didn't look half bad.

It was simple to make and the materials were very inexpensive.

Here is a shot of that set up.

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