Quote:
Originally Posted by Slawomir
I rarely upscale final images as I am confident that drizzle will yield a superior result to upscaling a final image, but perhaps one day I could actually try to measure if there are any differences.
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Ah, ok, I see things are a bit different in PixInsight (which I never used). What I'm doing regularly and meant in my question is sub-pixel alignment and interpolation without upscaling. The basic calculations are comparable to drizzling but the image size remains unchanged.
Quote:
Originally Posted by RickS
..my experience with undersampled data is that Drizzle still does a much better job of rounding up stars than sub-pixel interpolation without Drizzle.
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Rick: Do you think this is also valid for this 'in-place' drizzling-like interpolation? (Unfortunately, my equipment and the seeing at my location do not allow undersampling, so I can't do real tests.)
Erwin