Winjupos processing artefact help [Solar System] Processing techniques · IzaakC · ... · 3 · 287 · 1

Hello,I have done planetary acquisition before but this was my first time using Winjupos to derotate images. I took 10 videos of mars that were 2 minutes long with 20000 frames in each. I then stacked the best 25% in autostakkert of each video.

I then did a gentle sharpen in registax. (Revision A/Original)

I am not sure if the following steps are correct.
I loaded the first image and then aligned the mars outline, filled out date and time info and then saved the .ims file. I then loaded the second image, changed time and then saved the .ims file. Is this correct, or am I supposed to realign the outline on the image. It is very close to aligned but not quite.

Once I had made the .ims for each stack, I compiled the derotated image. (Revision D)

I then did a sharpen in registax. It was at this point I noticed the white artefacts on the terminator of the planet. I do not see these in the images before derotation, so I am thinking these are a Winjupos artefact? (Revision B and C)

I am wondering what causes these artifacts and what is the best way to prevent them?
The images are below (as revisions):


Thank you for your assistance,
Izaak

Thank you very much Jesco!