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Proceedings Paper

Conceptual study for a sub-pupil instrument having 4 high order adaptive optics path for parallel multi-wavelength high contrast imaging, and medium resolution spectrometry
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Paper Abstract

We present the concept of an instrument that will create 4 circular sub-pupils of 3 m in diameter. Each sub-pupil path will be corrected by a high order adaptive optics system (SR~80% in H) without spider and M2 obstruction. These four independent channels, obviously all pointed towards the same field, allows the possibility of covering totally different parts of the electromagnetic spectrum simultaneously without compromising Signal to Noise Ratio. Each channel can be dedicated to very specialized but complementary purposes: high contrast imaging, pseudo-wide field imaging, high precision multi-color photometry, medium-resolution spectroscopy, polarimetry and sparse-aperture masking.

Paper Details

Date Published: 24 September 2012
PDF: 8 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84467Z (24 September 2012); doi: 10.1117/12.927162
Show Author Affiliations
Frédéric Y. J. Gonte, European Southern Observatory (Chile)
Pierre Bourget, European Southern Observatory (Chile)
Julien Girard, European Southern Observatory (Chile)
Pierre Haguenauer, European Southern Observatory (Chile)
Dimitri Mawet, European Southern Observatory (Chile)

Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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