Re-Alignment after so many ditherings

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Re-Alignment after so many ditherings was created by PK

Maybe there is a way to resolve this already, but I have not seen it.

Problem. After many ditherings, the target can be quite a bit away from where it started.
Often, it's not a problem, as it's not off by much, and my target is centered anyway.
But occasionally, on very large subjects, I can find that dithering moves a critical star or object that was on the edge of the frame off the edge.

Solution: After a set amount of ditherings (user controlled), EKOS performs a re-alignment using the very first image in the session as the reference image.

Thanks!

iOptron CEM25P
William Optics Star71
ASI 1600Mm Pro
Moonlight motorfocus
LodeStar X2 and ZWO OAG
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NANO PC-T4
1 week 2 days ago #34849

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Replied by knro on topic Re-Alignment after so many ditherings

Right now, it's hardcoded to wander a maximum of about 25 pixels. Have you seen it stray more than that? I guess I should make this value configurable.
Jasem Mutlaq
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1 week 2 days ago #34852

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Replied by wvreeven on topic Re-Alignment after so many ditherings

Jasem, that is pixels of the guide cam, right? Not pixels of the imaging cam?
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1 week 2 days ago #34853

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Replied by PK on topic Re-Alignment after so many ditherings

Here's a video of what I see:



Dither set to 3 px.
Exposures 120 seconds each.

Peter

iOptron CEM25P
William Optics Star71
ASI 1600Mm Pro
Moonlight motorfocus
LodeStar X2 and ZWO OAG
DewBuster
NANO PC-T4
Last edit: 1 week 2 days ago by PK.
1 week 2 days ago #34858

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