Messier 82: Processed from a New RGBWS Perspective
OTA: CDK17
Camera: FLI Proline 16803, 9-micron pixels, 0.64 arcsec/pixel
Observatory: Rodeo, NM (Bernard Miller)
EXPOSURES: (acquired 1/2022)
R: 12 x 900
G: 16 x 900
B: 16 x 900
L: 27 x 1200 – discarded…someday I'll bore you with why I no longer use L subs
H: 12 x 1800
Total exposure 26 hours
Processed by Alex Woronow (2022) using PixInsight, Topaz, 3DLut, SWT, NBA
Ever make a final image, post it on Astrobin, then pull it down because you did a better rendition? That is the situation with this image.
Between the time I posted the first version (now at
https://astrob.in/rmhaej/0/), which I liked at the time, and this reprocessed version, I did considerable reading and experimenting with the PI tool RGBWS and researched the effects of adding the L master to RGB—the effects are not necessarily sound!
The research was worth the effort as it motivated much adjusting of the RGBWS parameters and the discarding of the L data, both of which facilitated a much-improved result. I hope you think so too.
Alex Woronow
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