VNP
Thank you, I'll try.
~~Am I on the right track here?~~ No Just reading the source code at the moment. This sure looks like something that "bridges" together values that, in a way, I...
No, this is not it. It should be this guy ``` private double bilinearInterpolation(double x, double y, boolean mark) { ```
Thinking aloud: I think a point spread function is needed, as the bending smears the spectral line info into multiple pixels, and averaging them is in fact averaging values that...
Still thinking aloud. A local slope should give the amount by which to perform a vertical-only deconvolution. In fact I think this is a good way to show what's happening...
Still thinking how to address this issue. These Sodium D2 images are too nice to be left out of the repertoire. 
Update, using version 2.7.1 dev. I am fairly confident my sodium raws are as decent as they can get, I had very good seeing today. I have the He from...
INTI also shows the polar caps but nowhere near the same amount of banding 
Correction, INTI's raw looks like this, same artefacts 
Could be the same as https://github.com/melix/astro4j/issues/416