u/Diamond_Enderman

Confused with color calibrating comet starless image?

Confused with color calibrating comet starless image?

Hello, I’ve mostly learned how to process a comet with Pixinsight, and I know you can calibrate the stars with SPCC and it gives a natural color. I watched this tutorial here: https://youtu.be/Y2n91tcmD9k?si=Btp8eipFa6e1542W  and I learned that you save the RGB numbers from that result, put it into ColorCalibration for the “Manual white balance” and apply it to your comet image (after DBE). Im using a color camera, and it looks like so is he. What I don’t understand is why does my DBE image still get the insane bright green color when I STF stretch it, and I have to do unlink stretch to get a regular stretch (with still a green cast). And when I apply the ColorCalibration to my unlinked stretched comet image, it does correct the colors but if I turn off the STF and do a regular stretch (GHS or histogram) the colors are still like this weird green throughout the whole image, not the corrected colors I saw from the STF. What am I doing wrong? It looks like I have to manually align the color channels when stretching, but the guy in the video didn’t. Any answers would help, thanks

u/Diamond_Enderman — 2 days ago

Hello I am currently learning to process comets with Pixinsight, and I had already successfully processed C/2025 A6 (Lemmon), but I want to redo it since I've later learned that the blue ion tail is all burred and not very sharp do to it moving a ton within a small time frame. I know people online have mentioned this issue but I can't remember or figure out where to look for the solution. How should I get a final image with the sharp ion tail? Surely I won't have to dump the majority of the frames?

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u/Diamond_Enderman — 8 days ago