Moon: Full in LRGB (jewzaam)

Contains: Solar system body or event

Moon: Full in LRGB

This is my favorite moon image I've done so far, full moon from March 17, 2022.

Took 120s videos of each L, R, G, and B filters on the ASI260MM Pro using a ROI in FireCapture. Each filter with gain=0 and gamma=50, exposure set so histogram peak was about 50%: L=1.5ms, R=5ms, G=4.5ms, B=4.5ms.

Initial processing in AstroSurface and I decided only to use wavelet for the L filter. I did need the unprocessed L stack though. PixInsight's star alignment works for lunar but it needed the raw L to align R, G, and B. A few things I did different to the luminance this time that were interesting. First I did an initial 2 passes of sharpening with UnsharpMask, but applying 50% only. Then used local histogram transformation 4 times with different kernel sizes, from larger to smaller (128, 64 twice, and 32). Contrast was 2.0, higher than I usually use for DSO. And amount of just 0.1! From there it's curves and SCNR for the RGB color to taste, some curves on L to get better contrast, LRGBC, and a final few minor tweaks with curves in K and S. RGB was saturated before LRGBC, careful to mask areas that would be blown out in saturation later (had to try a few times to get it right!)

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Description: Re-processed with an eye to a brighter result based on feedback. Also calibrated my monitors finally, though I don't think it made much difference in the result for this image.

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Moon

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Moon: Full in LRGB

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