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QHY Polemaster - a (maybe) silly question

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#1 Epox75

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Posted 24 February 2021 - 07:07 PM

Hello, 

 

I have recently set up a Mesu mount with the QHY polermaster. Until now I have always used a Celestron mount and always polar aligned it through the polar scope and the all star alignment procedure. 

 

On my Celestron mount the polemaster would go right at the center of the RA axis so when I turn the RA axis the Polermaster would turn on itself. On the Mesu mount instead, the Polemaster is placed on a side compared to the center of the RA axis so when I turn the RA axis the Polemaster will make a circle.

 

So the silly question is: does this makes a difference in the polar alignment procedure? 

 

 



#2 cytan299

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Posted 24 February 2021 - 08:03 PM

No difference. The PM can be mounted away from the centre of the RA axis. I have mine mounted at the bottom of my saddle.

 

cytan


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#3 jgraham

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Posted 24 February 2021 - 08:03 PM

No, it works exactly the same way.

 

Enjoy!


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#4 Epox75

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Posted 24 February 2021 - 08:14 PM

No difference. The PM can be mounted away from the centre of the RA axis. I have mine mounted at the bottom of my saddle.

 

cytan

 

 

No, it works exactly the same way.

 

Enjoy!

Thank you! 


Edited by Epox75, 24 February 2021 - 08:15 PM.


#5 Jarno

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Posted 25 February 2021 - 02:10 AM

That's the beauty of the Polemaster and similar alignment systems: they don't have to be on the axis and they don't even have to be parallel to it. All that matters is that they can see the area around the pole so they can calculate where the axis is pointing from the star pattern rotation. You can put it on the mount, on top of the scope, hang it underneath the dovetail or at the end of the counterweight bar - as long as there's no flex it all doesn't matter.

 

Jarno 


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#6 doole

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Posted 25 February 2021 - 11:35 AM

Just as long as it stays more or less orthogonal with the RA axis when you move the dec axis yer golden...



#7 emflocater

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Posted 26 February 2021 - 03:57 PM

No problem where mounted. I have mine mounted on my forehead and now I can find my way home walking from the local bar! FarmerRon.gif

 

Cheers

Don


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#8 Jarno

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Posted 27 February 2021 - 10:00 AM

I can find my way home walking from the local bar! FarmerRon.gif

Probably because you're drift-aligning.

 

Jarno


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