StarAlignment - star detection

[fneyer]

Hi,

I generated a synthetic star field with StarGenerator. When using as a reference (or as an image to be aligned to another reference) StarAlignment fails:

Structure map: done
Detecting stars: done
0 stars found.
*** Error: No stars found
<* failed *>

Any idea?

Thanks, Fabian

[Juan Conejero]

Hi Fabian,

Yes, this happens sometimes with synthetic star fields and the new star detection engine. I'll try to fix this problem as soon as possible.

The workaround is very easy: just add a small pedestal to the synthetic star field. For example, apply the following PixelMath expression:

$T + 0.05

with the rescale result option disabled. StarAlignment will work without problems.

Besides this, to use synthetic star fields as registration reference images I strongly recommend you generate them as CSV files with StarGenerator (output mode parameter). You can select a CSV file as the reference image in StarAlignment.

[fneyer]

Hi Juan,

Thanks a lot, will try asap! Can't wait to play around with the new StarAlignment tool!
You are doing an amazing job - never expected you to be that quick!

Fabian

[fneyer]

Hi Juan,

Still having the same error message (after adding the pedestal, without rescale in PixelMath)...?
I would also prefer to save the CSV file as the reference but then I would need to be able to rotate it first (which I can with the rendered synthetic image).

Fabian