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ESCAPE : a first step to high resolution solar coronagraphy in Antarctica

Published online by Cambridge University Press:  27 June 2012

L. Damé
Affiliation:
LATMOS/IPSL/CNRS/UVSQ, 11 Bd. d’Alembert, 78280 Guyancourt, France. e-mail: luc.dame@latmos.ipsl.fr
L. Abe
Affiliation:
Laboratoire Lagrange, CNRS/Université de Nice, Campus Valrose, 06108 Nice, France
M. Faurobert
Affiliation:
Laboratoire Lagrange, CNRS/Université de Nice, Campus Valrose, 06108 Nice, France
S. Fineschi
Affiliation:
INAF, Osservatorio Astronomico di Torino, 10025 Turin, Italy
S. Kuzin
Affiliation:
Laboratory for solar X-ray Astronomy, Lebedev Physical Institute, 119991 Moscow, Russia
P. Lamy
Affiliation:
Laboratoire d’Astrophysique de Marseille, CNRS, 13388 Marseille Cedex 13, France
M. Meftah
Affiliation:
LATMOS/IPSL/CNRS/UVSQ, 11 Bd. d’Alembert, 78280 Guyancourt, France. e-mail: luc.dame@latmos.ipsl.fr
S. Vives
Affiliation:
Laboratoire d’Astrophysique de Marseille, CNRS, 13388 Marseille Cedex 13, France
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Abstract

The Dome C high plateau is unique for coronagraphic observations: sky brightness is reduced, water vapour is low, seeing is excellent and continuity of observations on several weeks is possible. ESCAPE (the Extreme Solar Coronagraphy Antarctic Program Experiment) will perform 2-dimensional spectroscopy of the forbidden line of FeXIV at 530.285 nm: precise line profile analysis will allow the diagnostic of the nature of waves by simultaneous measurements of velocities and intensities in the corona. ESCAPE is proposed to Institut Paul-Emile Victor (IPEV) for a campaign in 2012–2013 at Dome C/Concordia since all subsystems are available in particular thanks to an ESA STARTIGER 2010 R&D “Toward a New Generation of Formation Flying Coronagraph”. Using state-of-the-art technologies developed for Space missions (a Three Mirrors Anastigmat telescope, the TMA, a 4 stages Liquid Crystal Tunable-filter Polarimeter, the LCTP) allows us to propose an automated Coronal Green Line full-field Polarimeter for unique observations (waves nature and intensity to address coronal heating) with the best possible performances on Earth and for preparing and testing the technologies for the next steps in Space. No other site would allow such coronagraphic performances (the sky brightness is a factor 2 to 4 better than in Hawaï) and with high spatial resolution (better than an arcsec is possible).

Type
Research Article
Copyright
© EAS, EDP Sciences 2012

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References

Damé, L., Andretta, V., & the ARENA Solar Astrophysics Working Group, 2009, EAS Publications Series, 40, 451 CrossRef
Faurobert, M., Arnaud, J., & Vernisse, Y., 2012, EAS Publications Series, 55, 365 CrossRef
Lamy, P., Damé, L., Vives, S., & Zhukov, A., 2010, Proc. SPIE, 7731, 44
Lin, H., & Penn, M.J., 2004, PASP, 116, 652 CrossRef
Vives, S., Damé, L., et al., 2010, Proc. SPIE, 7731, 152