@stfn@thomasfuchs I was wondering about using it for astro-landscape work too - a neighbour a couple of streets away mentioned the other day about using PI for processing aurora photos, which had simply never occurred to me ๐คฏ So why not go the whole hog? :)
Just bought RC Astro's BlurXTerminator plugin for PixInsight.
This is a comparatively cheapo SkyWatcher 80ED with lousy "flattener" maladjusted, near the far-left middle edge of the frame, before and after running BlurXTerminator. I had to check twice I was still comparing the same section of the frame, it's that radical an improvement.
This is one *massive* aurora display on the go. Too much cloud in the wrong places to be seeing any red but it was right overhead and down into the southern side of the sky... Just wow.