Correcting second-order contamination in low-resolution spectra
V. Stanishev
TL;DR
This paper introduces an empirical correction method for second-order contamination in low-resolution spectra, specifically applied to spectra from the ALFOSC spectrograph, improving the accuracy of astronomical observations of supernovae.
Contribution
The paper presents a new empirical correction technique tailored for low-resolution spectra affected by second-order contamination, enhancing data quality for astronomical analysis.
Findings
Effective correction demonstrated on supernova spectra
Improved spectral accuracy after applying the method
Applicable to spectra obtained with specific grisms
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.
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