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M57 - Drizzle Comparison, Uwe Deutermann

M57 - Drizzle Comparison

Getting plate-solving status, please wait...
M57 - Drizzle Comparison, Uwe Deutermann

M57 - Drizzle Comparison

Equipment

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Acquisition details

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Description

For me the question to 3x Drizzle or not has been answered with this little "experiment". Both images were created with the same raw data, the 1x Drizzle with Median stacking mode, the 3x Drizzle with Median Kappa-Sigma Clipping (Kappa=2; Iterations=5). The pixel blocks in the 1x Drizzle version are clearly visible. Admitting that the magnification/crop of these images is pretty high, but it tells that at this level the 3x Drizzle is much smoother.

Only 4 processing steps (final image with more will come soon): DBE; Linear Fit to Green channel; Histogram Transformation to adjust every channel to the same brightness; LRGB Combination.

For best viewing I recommend the Full Resolution image.

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