期刊
OBSERVATORY OPERATIONS: STRATEGIES, PROCESSES, AND SYSTEMS IX
卷 12186, 期 -, 页码 -出版社
SPIE-INT SOC OPTICAL ENGINEERING
DOI: 10.1117/12.2629920
关键词
Exoplanets; Transit; TTV; Antarctica; TESS; ExoFOP; Photometry
资金
- European Union [803193/BEBOP]
- Science and Technology Facilities Council (STFC) [ST/S00193X/1]
- European Space Agency (ESA) through the Science Faculty of the European Space Research and Technology Centre (ESTEC)
- IPEV
- PNRA
- INSU
- ESA through the Science Faculty of the European Space Research and Technology Centre (ESTEC)
- University of Birmingham
- laboratoire Lagrange [CNRS UMR 7293]
- Universite Cote d'Azur through Idex UCAJEDI [ANR-15-IDEX-01]
- French Community of Belgium
- European Space Agency (ESA)
The possibility of observing transiting exoplanets from Dome C in Antarctica offers unique advantages, but also comes with limitations. The current state of operations of the ASTEP+ telescope at Concordia Station is presented, along with improvements in data analysis and transfer. The Python and web-based systems used for transit observation scheduling are also introduced.
The possibility to observe transiting exoplanets from Dome C in Antarctica provides immense benefits: stable weather conditions, limited atmospheric turbulence, and a night that lasts almost three months due to the austral winter. However, this site also presents significant limitations, such as limited access for maintenance and internet speeds of only a few KB/s. This latter factor means that the approximately 6TB of data collected annually must be processed on site automatically, with only final data products being sent once a day to Europe. In this context, we present the current state of operations of ASTEP+, a 40 cm optical telescope located at Concordia Station in Antarctica. Following a successful summer campaign, ASTEP+ has begun the 2022 observing season with a brand-new two-colour photometer with increased sensitivity. A new Python data analysis pipeline installed on a dedicated server in Concordia will significantly improve the precision of the extracted photometry, enabling us to get higher signal-to-noise transit detections. The new pipeline additionally incorporates automatic transit modelling to reduce the amount of manual post-processing required. It also handles the automatic daily transfer of the photometric lightcurves and control data to Europe. Additionally, we present the Python and web-based systems used for selection and scheduling of transit observations; these systems have wide applicability for the scheduling of other astronomical observations with strong time constraints. We also review the type of science that ASTEP+ will be conducting and analyse how unique ASTEP+ is to exoplanet transit research.
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