Hi @mauricetoet,
I would recommend for the mosaic registration to use:
4) Register
use “dynamic distortion correction”
disable “same camera and optics” (the panels were created by APP, so APP is the camera now, and this camera normally is slightly different for all panels)
mosaic mode
( 5) normalize, you can experiment with advanced normalization mode)
6) integrate
use full composition mode
use LNC 3 iterations degree 1 to start with, increase the degree if you see clear illumination difference between the panels. (your mosaic already looks very good in this aspect )
enable MBB, depending on overlap between the panels, experiment wtih 5-20 %. The percentage for MBB is to be compared with the % of overlap between the frames. so if they overlap for 25%, increase MBB to 25% for instance.
Pixel interpolation – Lanczos 3 with “no under/overshoot” turned on, to prevent artefacts at star borders due to Lanczos.
If the registration isn’t perfect, it can help to adjust some settings in
3) analyse stars
– increase the maximum amount of stars,
– lower kappa to 4,
– increase minimum star size to 5 or 6 to start
– enable filter star profile (gives a bit better star lokation, so better registration)
– increase clip star profile to 0,3 or even 0,5
For perfect registration of all frames make sure, APP had enough stars to work with. More than 1000 is usually enough.
I am looking at your downscaled mosaic, but I can’t find any flaws at the moment. Probably, in the full resolution the flaws are clear though, or really small?