I want to write a function that cross correlates a spectrum with a quasar template
I’d like to ask you how can I convert my flux density vs wavelength spectrum to log-wavelength. It’s not clear to me if I should just take wavelength axis -> log-wavelength axis. Or should I do something else?
From what I understand from reading here other people's questions, I need the spectra to be binned linearly in log-wavelength.
Sorry for my ignorance, but what does it mean? I understand how it helps but not the action itself. And how do I do that (let's say on Matlab or Python)? I know it's related to interpolation but I do not understand how to do it and why.