... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > How can I correct telluric absorption lines in the Reflex science end products? ... Observing with ESO Telescopes . ... Data Handling and Products . ... Science Data Products Forum . ... A software tool to fit and correct the telluric lines directly in your science spectra without the needs of using an observed telluric standard star is available at http://www.eso.org/sci/software/pipelines//skytools/ . ...