Hi all. I am attempting to join spectra from the short (400-1000 nm) and long (1000-4000 nm) wavelengths of the CRISM spectrometer. Because of a spectral and spatial offset between the detectors I cannot simply merge the two data sets into one file. Rather, I need to collect and ratio the two detector's spectra independently and would like to join or merge them into one spectra from 400-4000 nm so they are one file in my spectral library. How do I do this? Spectral math S1+ S2 does not do it because they are not the same wavelength region. Any ideas? Thanks, Matt