Captured in 3 days spread out over 3 months I tried to capture the faint tidals of NGC 5907. According to an article by D. Mart´ınez-Delgado et. al. (
https://www.cosmotography.com/images/ngc5907_def.pdf) the mean surface brightness of the tidals is as low as 27.7 mag/arcsec^2. Hence I only managed to get the brighest area show up on my image taken from a Bortle 4 zone.
Still then it is very faint and you need to look closely to see it. Because of the extremely low SNR I decided not to boost it any further.
Workflow:
RGB:
HT, ArcsinhStretch, Curves, ACDNR, Convolution, HT
L:
Integrated with drizzle integration.
DBE, Deconvolution with deringing, Denoise with J. Rista method (using darkarchons and my script), stretch with HT, HDRMT, MLT (sharpening and noise reduction)
Combine L and RGB to LRGB.
LRGB:
ColorSaturation, ACDNR, USM, Curves. Rescale back close to pre-drizzle resolution.
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