This service provides access to a modified version of the Skiff Spectral catalog. The full catalog is available from VizieR. The table includes the standard spectral classifications (with spaces removed) and their encoded values as described in the IVOA note titled "An Encoding system to Represent Stellar Spectral Classes in Archival Databases and Catalogs". The table contains roughly 450,000 targets. Note Skiff does not list novae or supernovae.