Web-based telluric correction made in Spain: spectral fitting of Vega-type telluric standards

TL;DR

This paper introduces TelCorAl, a Python web application that simplifies telluric correction in ground-based infrared spectroscopy by using spectral fitting of Vega-type standards for more accurate and efficient atmospheric transmission measurement.

Contribution

The paper presents a novel, user-friendly web tool that employs spectral fitting of Vega-like standards for improved telluric correction in infrared spectra.

Findings

Effective correction of telluric features demonstrated

User-friendly web interface developed

Potential for widespread adoption in infrared astronomy

Abstract

Infrared spectroscopic observations from the ground must be corrected from telluric contamination to make them ready for scientific analyses. However, telluric correction is often a tedious process that requires significant expertise to yield accurate results in a reasonable time frame. To solve these inconveniences, we present a new method for telluric correction that employs a roughly simultaneous observation of a Vega analog to measure atmospheric transmission. After continuum reconstruction and spectral fitting, the stellar features are removed from the observed Vega-type spectrum and the result is used for cancelling telluric absorption features on science spectra. This method is implemented as TelCorAl (Telluric Correction from Alicante), a Python-based web application with a user-friendly interface, whose beta version will be released soon.