RGB specific wavelengths

Hello there,
I am trying to find out the specific operation wavelength numbers for red, green and blue when I split the image in color channels in ImageJ. So, not a range, e.g. red:635-700, but specific number that imagej takes , e.g. red: 650

thanks in advance

Hi @scienceenthusiast,
The imaging device determines which wavelength(s) is put in the red channel, not ImageJ.
ImageJ just fleshes out the intensities of the channel named red.
A sample image, with explanation of how you obtained it (imaging device make and type) would help the current discussion.