Hi,

Last night my imaging session failed after ~165 images. I have attached the logs.
It's my impression this problem has gotten worse since a recent upgrade.

running this on astroberry with:
INDI Library: 1.9.5
Code v1.9.5.1-6-gfd391d51b. Protocol 1.7.
Kstars 3.5.8
libasi 1.22-2

The problem was gone after I restarted Indi in the morning.

Any ideas ?

Thanks

Paul

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Paul replied to the topic 'Inconsistent polar alignment results' in the forum. 10 months ago

Just wanted to share I found the cause. The skyguider pro was not entirely stable when doing PAA. I fixed this and now the results are much better. however, still some minor variation between consecutive runs.

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The latest version of kstars there is just 3.5.4. Which is also available in the normal repositories. Wanted to try out some 3.5.5 nightly builds.

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I was rather thinking the other way around. ppa:mutlaqja/ppa currently only contains builds for ubuntu. was wondering if other platforms could be included there.

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I notice Jasem has a PPA for kstars-bleeding. Which is something I am interested to try out.
Wonder if it would be possible to add builds for astroberry for it (so Debian Buster on armhf).

I am willing to contribute if needed.

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What helped a lot for me was increasing the 'Search Radius' in the Align Options Profile Editor.

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I have seen this as well before. For now I am not using Ekos PAA anymore.

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Paul created a new topic ' Ekos extreme polar alignment errors' in the forum. 10 months ago

Hi,

Doing some more experiments on the PAA. Last night I had some very weird results:
"Polar Alignment Error:  67° 01' 04\". Azimuth:  66° 55' 39\"  Altitude:  03° 28' 55\""

I am not claiming my PA was perfect but this seems like a very high reading. I experienced this more than once.
Adding some logs here. I was playing around with the Focal length but even then it seems weird to get such a high error.

Any ideas ?

Thanks.

Paul

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Paul replied to the topic 'Inconsistent polar alignment results' in the forum. 10 months ago

That's an interesting hypothesis. I will try that out myself.
How did you come to this conclusion? And 120mm ?

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Paul replied to the topic 'Inconsistent polar alignment results' in the forum. 10 months ago

Still struggling with this one.
I am using the skyguider pro. Should I turn tracking _off_ while I am doing the procedure ?

I want to try the PHD2 Drift alignment as suggested by others, but my visibility on the sky is limited by buildings. E.g. I cannot see the intersection of the meridian and the celestial equator on the south side. Does this matter ? Can I still try it out regardless ?

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I notice something similar as Mountainair. When I select Multistar, after a few seconds, all other stars except for the main guiding star get unselected again.
The whole process keeps on working though but it looks weird..

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Paul replied to the topic 'Drift Plot of Guide Module' in the forum. 11 months ago

Just wondering if you could use the drift plot to analyze and adjust your polar alignment. If you see a consistent drift in a certain direction, it's quite likely there is an error in polar alignment, no ?

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Paul replied to the topic 'Inconsistent polar alignment results' in the forum. 11 months ago

Hi Jaseem,

Thanks for running these experiments. OK, it's good to know the procedure itself works. Then I guess I am doing something wrong.

Paul

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Paul replied to the topic 'Inconsistent polar alignment results' in the forum. 12 months ago

I actually did this because I thought it would be _more_ accurate.
Note that I am doing a manual slew so by no means I am accurately getting 60 degrees every time. I am assuming this does not matter that much ?

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Paul replied to the topic 'Inconsistent polar alignment results' in the forum. 12 months ago

Hi Doug,

In response to your questions:
a. I am using the EKOS polar alignment. I do the following: I try to get more or less polar aligned and then I use the procedure to take pictures at -60 degrees, 0 degrees and +60 degrees RA. I make the camera point straight ahead so declination is 90 degrees then I guess.
b. No, I have not but I plan to.

It's interesting you point out you had a similar experience with the Ekos PA. Can other people confirm this as well ? I will look at the PHD2 align when time and weather permit.
Thanks for your feedback.

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