The flux-calibrated and continuum-removed spectrum of 2I/Borisov as measured on 2019 October 4 (top) and October 27 (bottom) with DeVeny on the LDT is shown. The unbinned spectrum on which all analyses were performed is shown in gray, while a 3×​​​​​​ binned spectrum is shown in black. The wavelength ranges over which we extracted flux from CN, C₃, and C₂ emissions are shown in purple, blue, and green, respectively. All three species were detected on October 27, while only CN was detected in the earlier datasets.