ASPCAP spectral windows for the 15 APOGEE chemical elements along with examples of APOGEE sky (black), telluric (blue, red, and green), and stellar spectra (orange). To aid visibility, the spectral windows are broadened by ±30 km s−1, and all weights are set to the same value. From Garcia-Perez et al. 2015, their figure 4.
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