The spectools_ir suite analyzes medium/high-resolution IR molecular astronomical spectra. It has three main sub-modules (flux_calculator, slabspec, and slab_fitter) and also offers a sub-module (utils) with a few additional functions. Written with infrared medium/high-resolution molecular spectroscopy in mind, spectools_ir generally assumes spectra are in units of Jy and microns and uses information from the HITRAN molecular database. Some routines are more general, but users interested in other applications should proceed with caution.

The continuum tool (ctool) is a simple function to easily, automatically, and quickly estimate the continuum of an emission line spectrum to high precision. It uses an iterative process median-filter out narrow lines while preserving low-frequency variation. The final continuum spectrum uses a Savitzky-Golay filter.