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Off-Centered - While Dithering

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Is anyone seeing this happening?
I believe this is after a Meridian Flip (but I thought the image should be upside-down), but I'm seeing that the target is not centering afterwards.
This has happened several times (albeit it the last one was a +10 days ago because of clouds).

Next time we have clear skies, I'll watch to make sure a Flip occured.

Excuse the images... these are screen shots of images in DSS

3 years 11 months ago #51437
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This has been reported by several users. See page 4 and onward of indilib.org/forum/mounts/6447-meridian-flip-configuration.html
3 years 11 months ago #51445

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Replied by David Tate on topic Off-Centered After Flip

Oh thanks... yeah I saw that thread but wasn't following it close enough. Seems I need pictures :P
3 years 11 months ago #51446

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Currently we do not have a clear picture what happens. It would be great having a description and logs.

- Wolfgang
3 years 11 months ago #51447

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is Reset Mount Model After Meridian Flip check in Ekos Capture options? When using EQMod mount this could help.
3 years 11 months ago #51470

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A Log showing the initial align process, the flip and the align process after the flip is absolutely essential. Also raw fits images taken after both aligns. Details of when the various processes happened would help.

Vague anecdotes and screenshots are, I think, worse than useless. Worse because they waste time, encourage speculation and are frustrating for the people who would like to help.

If you expect people to spend their time going through this and working out what is going on then spending a little time to help them do so seems reasonable.

As for the DSS images it looks as if no flip was done because a flip will rotate the image by 180 degrees - well unless DSS has rotated one of the images back. If the flip failed I would still expect that an alignment would be done, but who knows. We don't.
The following user(s) said Thank You: Jasem Mutlaq, Wolfgang Reissenberger
3 years 11 months ago #51471

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Replied by S on topic Off-Centered After Flip

Maybe the developers should considering enabling logging of everything pr. default, such that logs can always be provided?
3 years 11 months ago #51479

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Replied by David Tate on topic Off-Centered After Flip


I hear your frustration. And I don't blame you. But you might also think of the frustration of throwing out 14 images from 23. So I was a tad frustrated too.

But hey, this is a work in progress. I get it.
Also, knowing ahead of time (to turn on logs) when I don't expect failure is kinda tough too. But you know I will in the future! ;)
3 years 11 months ago #51482

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Replied by David Tate on topic Off-Centered After Flip


I saw this on the other thread... I'll try to remember to check that off. I hear rumors... just rumors, that those sparkly things might be out tonight!
3 years 11 months ago #51483

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Replied by David Tate on topic Off-Centered After Flip


For those like me... ;) Who couldn't find it right-away.
Open Ekos / CCD Tab / Options Button / Ekos / Capture Tab / Reset Mount Model After Meridian Flip

Last edit: 3 years 11 months ago by David Tate.
3 years 11 months ago #51495
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Replied by David Tate on topic Off-Centered After Flip

I'm getting the feeling that what might be happening is... the random dithering that occurs, might be getting stuck in a downward trend?
3 years 11 months ago #51825
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    stellarmat...-30b.mp4

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Replied by Andrew on topic Off-Centered After Flip

Cone error will manifest as a misalignment after a meridian flip. So you should always do a realignment, ideally with plate solving.
3 years 11 months ago #51855

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