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Jerky motion in DEC


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#1 maxmirot

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Posted 27 May 2016 - 02:22 PM

I am getting jerky motion slewing in Dec after changing cameras. It was previously smooth.

 

Balance and HP autotune look fine.

Suggestions?

 

Max



#2 astrosirius

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Posted 31 May 2016 - 02:15 PM

Hello Max, have you done any changes in the equipment? Can you tell me which is it the setup you have now?

 

Best regards

Luis Romero.



#3 Waldemar

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Posted 31 May 2016 - 02:37 PM

A little change in your set up may influence the resonance frequency and thus influence the tuning...

Maybe you hit a critical point. The solution maybe to add some weight somewhere and rebalance?

 

Waldemar


Waldemar
--------------
Mount: DDM85 Standard 12V ; Telescopes: TEC140 + 140FF + Quad TCC ; Celestron RASA; TMB 92SS + 27TVPH Cameras: ZWO ASI 174MM cool; SBIG STF8300M; ATIK4120EX; TRIUS SX-36
Filters: Astronomik and Baader NB + RGB; Lunt double stack 75 mm unobstructed signature series + BF 3400; Dutch weather and light polluted skies.  

#4 astrosirius

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Posted 31 May 2016 - 02:49 PM

Hi Max, I remember that I had to add weight to remove the jerky motion, finally I added around 4 kg after this, the noise gone.

 

Lluis.



#5 maxmirot

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Posted 01 June 2016 - 07:36 PM

Hello Max, have you done any changes in the equipment? Can you tell me which is it the setup you have now?

 

Best regards

Luis Romero.

I changed cameras and re-balanced.

Astrophyics 305 Riccardi honders on the DDM 85



#6 maxmirot

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Posted 01 June 2016 - 07:36 PM

I will try to re-balance in DEC






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