Am Montag, 23. Juli 2018 22:31:25 UTC+2 schrieb clepsydrae:
>
> Maybe it is sufficient to connect all images sequentially and then run 
> align_image_stack only on the first and last image to connect them.
>>
>> (align_image_stack can only cope with a limited amount of movement. It 
>> this is too big between first and last image you can do it e.g. to link 
>> only every tenth image - connect images 0, 10, 20, 30, 40, 50 and 60)
>>
>
> Thanks -- I tried that (1-63 as well as connecting 1-7, 7-14, 14-21, etc, 
> plus 2-62) -- it might have helped a little bit, but didn't really make a 
> difference. The statistical pull of each immediate image connection seems 
> too strong.
>
Have you checked the cp between the first and the last image? Are the ok? 
Or have the many stars fouled align_image_stack and it has selected a 
neighbor star? How big is the error between the first and the last? 
Maybe optimize first only the first and the last image. Then leave them 
fixed and optimize the other images.


> (I used the Fast Preview window to add these control points -- I assume 
> that was your meaning.)
>
No, I meant to select only a subset of the images in the images tab and run 
then align_image_stack on the subset. 

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