The correlation matrices calculated for each of the four ﹩{JHK}1K2﹩ spectra. Going from the J band through K2, the correlation length can be seen to change as a function of speckle vs. background noise. The spectra are highly correlated at J with up to five channels showing high correlation values, down to ∼3 at K2, which is a consequence of the spectral resampling.