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Open clusters are key chemical and age tracers of Milky Way evolution. Whileopen clusters provide significant constraints on galaxy evolution, their usehas been limited due to discrepancies in measuring abundances from differentstudies. We analyze medium resolution (R~19,000) CTIO/Hydra spectra of giantstars in 58 open clusters using The Cannon to determine [Fe/H], [Mg/Fe],[Si/Fe], [Al/Fe], and [O/Fe]. This work adds an additional 55 primarilysouthern hemisphere open clusters calibrated to the SDSS/APOGEE DR16metallicity system. This uniform analysis is compared to previous studies[Fe/H] measurements for 23 clusters and we present spectroscopic metallicitiesfor the first time for 35 open clusters.

The Open Cluster Chemical Abundances and Mapping Survey: V. Chemical Abundances of CTIO/Hydra Clusters using The Cannon