This report describes in detail the generation of a “ truth ” spectrum of HR 6348 , using observations with the Short-Low ( SL ) module of the Infrared Spectrograph of HR 6348 , and the A dwarfs \alpha Lac and \delta UMi .
Using spectral ratios , we can propagate Kurucz models of the A dwarfs to the K giant HR 6348 , which can then serve to calibrate the remaining database of SL spectra .
Mitigation in the vicinity of the Pfund- \alpha line is necessary to reduce residual artifacts at 7.45 \mum .
In general , the new SL spectrum of HR 6348 has a spectroscopic fidelity of \sim 0.5 % or better .
Artifacts from the hydrogen recombination lines in the A dwarfs will generally be smaller than this limit , although the residual artifact from the blend of lines near Pfund- \alpha exceeds the limit at \sim 0.7 % .