EAS Publications Series
Volume 22, 2006Astronomy with High Contrast Imaging III: Instrumental Techniques, Modeling and Data Processing
|Page(s)||367 - 377|
|Published online||13 October 2006|
M. Carbillet, A. Ferrari and C. Aime (eds)
EAS Publications Series, 22 (2006) 367-377
Pupil densification: a panorama
Cornell University, USA
2 Observatoire de Haute Provence, France
The technique of pupil densification bridges the gap existing between conventionnal optical astronomy observing techniques and optical interferometry: it indeed leads to the concept of hypertelescope: an instrument that can provide direct images at the focus of an interferometer. The hypertelescope is the open sesame for high dynamic imaging with an interferometer: indeed, the elementary remapping of the pupil operated by a densifier not only maximizes the dynamic range and the signal to noise ratio of images but also makes the interferometer compatible with most existing coronagraphic devices. Moreover, a careful discussion about field of view show that for a diluted array, the pupil densification preserves all the relevant high angular resolution information collected by the interferometer and therefore induces no field loss.
© EAS, EDP Sciences, 2006
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