Galaxy M101 "Pinwheel"

Thank you for the expert opinion. Open AstroBin and see how people capture it from 20 hours and above, then we can talk about the blue tint and over-processing.

Actually, Artem is right, and I wouldn't rely on AstroBin—there's a lot of nonsense there. It's better to calibrate the white balance using photometry. Naturally, the calibration gets thrown off when adding an Ha filter, but having a reference in pure RGB, you can try to adjust it. My attempt with M101 didn't work out either; it went too red. I'll make another attempt once I gather enough RGB data.

I disagree. I performed spectrophotometric calibration, and the arms are blue. The question is how much we can enhance the color. Just as an experiment, I did spectrophotometry for my friend's image. We captured roughly the same data, but he originally shot with a color ASI2600, and it's the same story—the arms are blue. It's a shame I can't attach a screenshot here, "I have all the moves recorded")))

Write to the welder, he'll weld something for you.