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First light of SOVAG, a spectrograph for visible and near-infrared observation of asteroids
- Source :
- Experimental Astronomy, Experimental Astronomy, 2021, ⟨10.1007/s10686-020-09678-5⟩, Experimental Astronomy, Springer Link, 2021, ⟨10.1007/s10686-020-09678-5⟩
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- Spectroscopy in the visible and near-infrared has been the main tool for characterising the surface properties of asteroids for decades. For a given target, the two wavelength regimes are usually acquired by different telescopes/instruments, separated by years. They are seldom obtained simultaneously. However, it is not straightforward to combine datasets from different sources because of the spectral reddening linked with phase angle. We present the first-light result of SOVAG (Spectrographe pour l’Observations dans le Visible et infrarouge proche d’Asteroides Geocroiseurs), a new concept of spectrograph for observing both wavelength ranges at the same time. It is compact in design and portable. We developed a prototype of this instrument between 2016 and 2018. In July 2018, we mounted SOVAG on the 1 m-telescope in Pic du Midi observatory (for which it was designed) and conducted its on-sky first light experiment. We present a spectrum of (4) Vesta which demonstrates the reliability of observations and the accuracy of the calibration. Ongoing development will allow us to push observation-limits toward fainter objects.
- Subjects :
- Physics
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
010308 nuclear & particles physics
Near-infrared spectroscopy
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
First light
01 natural sciences
law.invention
Telescope
Phase angle (astronomy)
Space and Planetary Science
Observatory
Asteroid
law
[SDU]Sciences of the Universe [physics]
0103 physical sciences
Astrophysics::Earth and Planetary Astrophysics
Spectroscopy
010303 astronomy & astrophysics
Spectrograph
Astrophysics::Galaxy Astrophysics
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- Language :
- English
- ISSN :
- 09226435 and 15729508
- Database :
- OpenAIRE
- Journal :
- Experimental Astronomy, Experimental Astronomy, 2021, ⟨10.1007/s10686-020-09678-5⟩, Experimental Astronomy, Springer Link, 2021, ⟨10.1007/s10686-020-09678-5⟩
- Accession number :
- edsair.doi.dedup.....4d2ab755b021ea007b6bf5c2f5eeabb3