[Solved] Multiple Bad Pixel Maps for Mosaics?
I have a very fast computer (Ryzen 7850 with 128 GB of memory) that can put together a large (3x3 full frame) mosaic very fast. I know that the standard practice is to process each of the 9 panels separately, but this goes together as a whole quite nicely in a reasonable amount of time.
However, I'm getting hot pixels in the mosaic. I have the hot pixels set to 2.0.
Is this because APP mosaics can't deal with separate bad pixel maps for each panel? Or am I missing something? Thanks!
No, this has to do with the automatic integration settings in 6) Integrate. If you run a mosaic, the automatic integration settings disable outlier rejection on purpose, because it/we assume that you feed already created panels where outliers have been properly removed.
So in your case, the Bad Pixel Map does not remove all bad pixels and remainign hot pixels would be removed with the outlier rejection in integration.
So there is 2 options that you can try:
1) create a more aggresive Bad Pixel Map to start with, hot pixel kappa lower than 2.0 in that case.
2) or manually set the integration settings in 6) Integrate, by not setting the integrate option to automatic way at the top in menu 6). Set it to average for a mosaic and then enable outlier rejection and tweak the outlier rejection settings, especially the kappa high value which removes remaining hot pixels.
Perfect! Worked great! Thanks so much, Mabula.