منابع مشابه
Optical techniques for direct imaging of exoplanets/Techniques optiques pour l’imagerie directe des exoplanètes Shaped pupil coronagraphy
At Princeton we have been studying shaped pupil coronagraphs for high contrast imaging and planet finding. These will find applications in both ground and space imaging. In this article we summarize the design procedure for shaped pupils and review the various families of designs we have found. We describe the manufacturing processes we have used to make free standing shaped pupil masks and rev...
متن کاملOptimal Asymmetric Apodizations and Shaped Pupils for Planet Finding Coronagraphy
The realization that direct imaging of extrasolar planets could be technologically feasible within the next decade or so has inspired a great deal of recent research into high-contrast imaging. We ourselves have contributed several design ideas, all of which can be described as shaped pupil coronagraphs. In this paper, we offer a complete and unified survey of asymmetric shaped pupils designs, ...
متن کاملIntroduction to stellar coronagraphy
This paper gives a simple and original presentation of various coronagraphs inherited from the Lyot coronagraph. We first present the Lyot and Roddier phase mask coronagraphs and study their properties as a function of the focal mask size. We show that the Roddier phase mask can be used to produce an apodization for the star. Optimal coronagraphy can be obtained from two main approaches, using ...
متن کاملExtrasolar Planet Finding via Optimal Apodized and Shaped Pupil Coronagraphs
In this paper we examine several different apodization approaches to achieving high-contrast imaging of extrasolar planets and compare different designs on a selection of performance metrics. These approaches are characterized by their use of the pupil’s transmission function to focus the starlight rather than by masking the star in the image plane as in a classical coronagraph. There are two b...
متن کاملCoronagraphy with NICMOS
The Near Infrared Camera and Multi-Object Spectrometer (NICMOS) provides a coronagraphic imaging capability in camera 2. NICMOS PSF-subtracted coronagraphy routinely results in per-pixel background rejections of ∼ 10 of an occulted target’s total flux density at an angular distance of 1′′, thus providing a highcontrast lever for the detection of close sub-stellar companions. At 1.1 μm (with an ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Comptes Rendus Physique
سال: 2007
ISSN: 1631-0705
DOI: 10.1016/j.crhy.2007.02.009