Correcting second-order contamination in low-resolution spectra

Abstract

An empirical method for correcting low-resolution astronomical spectra for second-order contamination is presented. The method was developed for correcting spectra obtained with grism #4 of the ALFOSC spectrograph at the Nordic Optical Telescope and the performance is demonstrated on spectra of two nearby bright Type Ia supernovae.

accepted for publication in Astronomical Notes (Astronomische Nachrichten)

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