While a number of analysis tools for spectra have been mentioned, I haven't found much for reducing spectra, i.e. turning CCD frames that have images of spectral data into 1- or 2-D arrays of flux (or even counts) vs. wavelength (or even pixel number). So to be specific, tools for tracing and extracting spectra, for finding wavelength solutions, and for applying them to extracted spectra would be useful.
While a number of analysis tools for spectra have been mentioned, I haven't found much for reducing spectra, i.e. turning CCD frames that have images of spectral data into 1- or 2-D arrays of flux (or even counts) vs. wavelength (or even pixel number). So to be specific, tools for tracing and extracting spectra, for finding wavelength solutions, and for applying them to extracted spectra would be useful.