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Equipment Discussions >> ATM, Optics and DIY Forum

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Tavi
super member


Reged: 10/11/09

Loc: Romania, EU
Re: The Piston AZ mount new [Re: mattyfatz]
      #4081092 - 09/29/10 04:34 PM

Some ehnancement of the homemade tripod:



- internal alu arms for increased rigidity
- accessories triangle dish
- aluminium conical shoes, replacing the rubber ones
- carry belt, cause the tripod is very heavy...


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neo
Carpal Tunnel
*****

Reged: 02/12/08

Loc: Iasi, Romania
Re: The Piston AZ mount new [Re: Tavi]
      #4081202 - 09/29/10 05:26 PM

Tavi

Congrats and well done
Absolutely brilliant!


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Tavi
super member


Reged: 10/11/09

Loc: Romania, EU
Re: The Piston AZ mount new [Re: neo]
      #4535932 - 04/22/11 06:32 AM

The AZ-piston mount nr.2 is almost complete, ready for testing at night!

Here are azimouth fine tune mechanism:


It's based on a stainless steel M6 long screw:




The Fraunhofer refractor (80F/11.25) and the maksutov-cassegrain teleobjective MTO11-CA (100F/10) on the mount:



The stability of the mount is impressive and the fine tuning, can be improved, but useful. I will test the mount in the following spring hollydays.


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eric_zeiner
Phoenix's Dad
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Reged: 12/09/06

Loc: Georgia USA 34 31'57.18N 83 53...
Re: The Piston AZ mount new [Re: Tavi]
      #4537141 - 04/22/11 05:38 PM

Now you are cooking!

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neo
Carpal Tunnel
*****

Reged: 02/12/08

Loc: Iasi, Romania
Re: The Piston AZ mount new [Re: eric_zeiner]
      #4538266 - 04/23/11 08:02 AM

Fantastic job Tavi!
I imagine that a drive system (maybe even Goto) would be a terrific addition to this mount. The only problem would be finding a good 'n cheap set of worm gears but with some patience...


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Gray
scholastic sledgehammer
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Reged: 01/31/11

Loc: Hixson, TN
Re: The Piston AZ mount new [Re: neo]
      #4538439 - 04/23/11 10:04 AM

test

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Doug76
Long Achro Junkie
*****

Reged: 12/05/07

Loc: Refractor Heaven
Re: The Piston AZ mount new [Re: Tavi]
      #4538940 - 04/23/11 02:26 PM

As Eric and Frank opined...Awesome and Brilliant!

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Ed D
Carpal Tunnel
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Reged: 04/30/10

Loc: Sunny South Florida
Re: The Piston AZ mount new [Re: Doug76]
      #4539415 - 04/23/11 06:55 PM

I'm VERY impressed! Nice work.

Ed D


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Tavi
super member


Reged: 10/11/09

Loc: Romania, EU
Re: The Piston AZ mount new [Re: Ed D]
      #4549841 - 04/28/11 02:32 PM

Thank you!
Tuesday I've tried the mount with the refractor. The fine tune mechanism work great, except a small vibration on the azimuth. I will put a felt disk under the piston to brake it in position, cause the roler bearings allow moving it too easy.

I'm sure the mount will cary the future classic cassegrain 200 F/15 I will make this summer.


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Tavi
super member


Reged: 10/11/09

Loc: Romania, EU
Re: The Piston AZ mount new [Re: Tavi]
      #4549849 - 04/28/11 02:35 PM

Neo, I will keep the idea of the worm gear for the next piston mount, I have a lot of them! Thank you and clear sky!

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Tavi
super member


Reged: 10/11/09

Loc: Romania, EU
Re: The Piston AZ mount new [Re: Tavi]
      #5347384 - 08/01/12 05:40 PM

Because I had allmost finished the new clasical cassegrain 8" - wich I'll show you in another topic - and in the testing phase some problems has arised, I've made some improvements on the heavy piston AZ mount. First, I made a vixen style bar and adapt a vixen head from EQ6 mount, then a counterweight and the bar to put the telescope in equilibrium.



Cause the slips of the altitude clutch and the too big backlash of the fine tune mechanism on the azimuth, I've made some modifications to solve these problems.



Also I put new knobs on the screws and a eccentric lever instead a screw to activate the altitude clutch. To make the movements smoother I put custom lexan washers instead steel ones.



Now the mount work great, like when small refractors was on it, almost like a dobsonian when not used the fine tune mechanisms.


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Tavi
super member


Reged: 10/11/09

Loc: Romania, EU
Re: The Piston AZ mount new [Re: Tavi]
      #5615715 - 01/10/13 03:18 PM

A new small piston AZ mount, finished last month:










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Tavi
super member


Reged: 10/11/09

Loc: Romania, EU
Re: The Piston AZ mount new [Re: Tavi]
      #5615728 - 01/10/13 03:23 PM

The new mount has fine tuning screws on both axis and a vixen style head. The RFT refractor 90x600 in the picture is too heavy for it, but I use this mount with the mini maksutov MTO11-CA and is working great.

The only piece made on a lathe is the elastic textolit bushing which is the altitude clutch. Other pieces was made using hand tools and the homemade minimill.

Edited by Tavi (01/10/13 03:29 PM)


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Unknownastron
professor emeritus
*****

Reged: 04/06/05

Loc: CatsEye Observatory,Rural Sout...
Re: The Piston AZ mount new [Re: Tavi]
      #5641808 - 01/25/13 12:43 AM

Very good ideas and beautiful work. You are a very talented craftsman and your finished works look as much like art as machine. I look forward to your threads about that beautiful metal cassegrain. That is one of the best-looking telescopes I have ever seen.
Clear skies and clean glass,
Mike


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jmclaugh2001
super member
*****

Reged: 02/27/06

Loc: Reynoldsburg, Ohio
Re: The Piston AZ mount new [Re: Unknownastron]
      #5641868 - 01/25/13 02:18 AM

Sweet! I luv it!!

John


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Tavi
super member


Reged: 10/11/09

Loc: Romania, EU
Re: The Piston AZ mount new [Re: jmclaugh2001]
      #5641878 - 01/25/13 02:27 AM

Thank you!
I could't wait to bring them again under the dark sky.


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Tavi
super member


Reged: 10/11/09

Loc: Romania, EU
Re: The Piston AZ mount new [Re: Tavi]
      #5642732 - 01/25/13 02:45 PM

unknowastron, here is the topic about the cassegrain with details:
http://www.cloudynights.com/ubbthreads/showflat.php?Cat=0&Board=atm&N...


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