Not just infra-red, but in combination with x-rays. There may be other wave and freq., I have not yet called the measurement institutions, the telescopes etc. for direct observations. I want those in my greedy little hands. I want the images, as many that I can have. She used "every wave, freq, and intensity that she could get". She is hell bent on understanding galactic cluster formation. I am very pleased that she took measure on some incidentals.