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INDI Library v2.0.7 is Released (01 Apr 2024)

Bi-monthly release with minor bug fixes and improvements

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Lost star when dithering causes capture module to hang

Replied by Jasem Mutlaq on topic Lost star when dithering causes capture module to hang

Thanks, I just pushed a fix for the not-so-random dither and used different algorithm and add a bounded area. Please try the nightly build or wait for next release.
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5 years 9 months ago #26784

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Replied by Kevin Ross on topic Lost star when dithering causes capture module to hang


That's quite odd, since for me with 10 pixel dithering it does move in a different direction each time.
5 years 9 months ago #26796

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Replied by nMAC on topic Lost star when dithering causes capture module to hang

Backlash... could it be the cause? Even with 10 pixels movement?
My results are mixed. Sometimes it goes always in the same direction. And suddenly,then it change directions.
I have to test the new build.
5 years 9 months ago #26804

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Replied by Alfred on topic Lost star when dithering causes capture module to hang

Odd, indeed. But what can I say, it always moves in the same direction here as evidenced by the pictures I posted. I should have a chance to test the new build tonight. Backlash is not an issue with this mount.
5 years 9 months ago #26805

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Replied by Alfred on topic Lost star when dithering causes capture module to hang

Just ended tonight's session. Certainly useless to target nebulae at full moon but I wanted to test the new build. I updated nightlies just before I started the session. Here is the result of two 6-lights jobs. I don't see much improvement.
5 years 9 months ago #26832
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Replied by Alfred on topic Lost star when dithering causes capture module to hang

That was done using KStars bleeding 2018-06-25. Just a few minutes ago version 2018-06-26 arrived. So I assume I used one that did not provide the dither "random" fix?
5 years 9 months ago #26833

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Replied by Kevin Ross on topic Lost star when dithering causes capture module to hang

Well, here's the commit messge:
commit 6e4d0c918463b34bc3dc202a1ef28432c08de4fd
Author: Jasem Mutlaq <mutlaqja@ikarustech.com>
Date:   Mon Jun 25 20:46:45 2018 +0300
 
    Fix random dithering not being not so random, plus limit it to 25 pixels box

So it was committed Jun 25, at 20:46 +0300. Was your build built before or after that?
Last edit: 5 years 9 months ago by Kevin Ross.
5 years 9 months ago #26835

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Replied by Jasem Mutlaq on topic Lost star when dithering causes capture module to hang

I just checked the builds and found that the build failed on Ubuntu 16.04, so I patched in a fix and now it builds fine. So if you're using 16.04, please update again.
5 years 9 months ago #26837

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Replied by Alfred on topic Lost star when dithering causes capture module to hang


If KStars/Help/About KStars is where to look at, it was built on Jun 25, about 00:something. So that suggests I tested an old version. However, I had updated the nightlies on Jun 27, 00:something so I was - without further check - of the opinion the new built had to be in there. I'm running Kubuntu 18.04.
Last edit: 5 years 9 months ago by Alfred.
5 years 9 months ago #26847

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Replied by Alfred on topic Lost star when dithering causes capture module to hang

Where can I find info regarding commits?

I assume dithering is part of INDI/EKOS as opposed to KStars, isn't it? If it is somewhere in INDI, which one of the many files is the one that incorporates the "dither code"?
5 years 9 months ago #26882

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Replied by Rob Lancaster on topic Lost star when dithering causes capture module to hang

For INDI: github.com/indilib/indi

For KStars:https://github.com/KDE/kstars

The dithering commands are almost certainly in KStars in the ekos folder in the guide folder.
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5 years 9 months ago #26883

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Replied by Alfred on topic Lost star when dithering causes capture module to hang

Tonight I got to test the new dither code and it was a great success. Dithering no longer goes in one direction. Automatic termination of guiding (once the mount is being moved manually) also works very well. I did not encounter ANY issues tonight, everything just worked perfectly. Awesome!
The following user(s) said Thank You: nMAC
5 years 9 months ago #26960
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