The SONG network archive holds >580,000 spectra of 3091 stars (2014–2025) and is presented as an open community resource for asteroseismology, binaries, variability, and exoplanets.
HERMES at Mercator, competitive high-resolution spectroscopy with a small telescope
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abstract
HERMES, a fibre-fed high-resolution (R=85000) echelle spectrograph with good stability and excellent throughput, is the work-horse instrument of the 1.2-m Mercator telescope on La Palma. HERMES targets building up time series of high-quality data of variable stellar phenomena, mainly for asteroseismology and binary-evolution research. In this paper we present the HERMES project and discuss the instrument design, performance, and a future upgrade. We also present some results of the first four years of HERMES observations. We illustrate the value of small telescopes, equipped with efficient instrumentation, for high-resolution spectroscopy.
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astro-ph.SR 1years
2026 1verdicts
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The Stellar Observations Network Group (SONG) -- A Legacy Archive of Stellar Time-Domain Spectroscopy
The SONG network archive holds >580,000 spectra of 3091 stars (2014–2025) and is presented as an open community resource for asteroseismology, binaries, variability, and exoplanets.