Splatalogue is a database for astronomical spectroscopy which contains information on nearly 6 million spectral lines and is maintained by the National Radio Astronomy Observatory (NRAO). Splatalogue contains data from 7 catalogs and other sources of spectral line data. It is accessible through an online search interface. The name is an acronym for spectral line catalog. The spectral lines contained in Splatalogue vary in a frequency range from 400 to 3.22 × 10 Hz (400 Hz to 3.22 PHz), or equivalently, wavelengths from 97.25 nm to 749.5 km. About 99.99% of the lines are in spectral microwave, millimeter and submillimetric frequencies (1 GHz to 10 THz), since the catalog is mainly used by observational astronomers using instruments such as ALMA and VLA Karl G. Jansky and GBT Robert C. Byrd of the NRAO. Bibliography
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