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INDI Library v1.8.6 Released (21 Aug 2020)

August 2020 release of INDI Library v1.8.6 introduces new drivers while providing fixes and improvements to existing devices and core framework.

Best Polar alignment method ?

1 year 4 months ago 1 year 4 months ago by Frank L.
Frank L
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Best Polar alignment method ? #38467
Hello,
I ask myself a question for polar alignment:

I have a Polemaster camera on my skywatcher eq6r pro mount, a Celestron C8 and either my Asi 294mc pro in hyperstar mode or in the focus of the telescope.

my question : is it better to do the polar alignment via ekos from the Polemaster (so directly on the mount) or go through my asi 294 ?

Best

Frank

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1 year 4 months ago
Gonzothegreat
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Best Polar alignment method ? #38468
Via the polemaster, which should be perfectly fitted at the right location on the mount. There will not be any flexure nor miss-alignment from your imaging rig.

Kstars Mac osx
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HEQ5 pro / QHY5L-II-M (OAG) / Atik 314L+ / Gerd Neumann drawer

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1 year 4 months ago
Frank L
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Best Polar alignment method ? #38484
Thanks ;)

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1 year 4 months ago
patdut
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Best Polar alignment method ? #38496
I guess you need to check if you have at least 30' of field minimum to do the Ekos alignment. This alignment can be done with the guiding instrument too which allow to have wider field. I do alignment east to west and do it again west to east. The result is that in less than 10mn I have the mount axle close to few seconds to the pole. If you don't have enough field of view so polemaster could be better bu I am not sure it is so competitive if you have enough field.

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1 year 4 months ago
Frank L
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Best Polar alignment method ? #38521
good point.
I have enough field of view to compare the two methods.
A priori, the method from the Polemaster should be the best, but what if the telescope is not perfectly aligned on the mount (I find that the plate of the eq6r pro is not perfect and even for the vixen bar of the C8 ... a little too much flexion I find).
if the sky is discovered a little on the side of Angouleme, I will try tonight ;)

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1 year 4 months ago
wvreeven
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Best Polar alignment method ? #38522
Alignment of the scope is irrelevant. The only thing that matters is flexure. As long as the offset between the telescope and the mount is constant, then rotating the mount will lead to a good measurement of the polar alignment error. This is also true when using a guide scope instead of the main imaging scope.


Wouter

ASI6200 and filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
ASI1600MM-Pro Cooled and filter wheel with an 8" TS Ritchey-Chrétien on a SkyWatcher EQ6-R

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