Review of small-angle coronagraphic techniques in the wake of ground-based second-generation adaptive optics systems

Download
  1. Get@NRC: Review of small-angle coronagraphic techniques in the wake of ground-based second-generation adaptive optics systems (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1117/12.927245
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Proceedings titleSpace Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave
Series titleProceedings of SPIE; Volume 8442
ConferenceSpace Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, July 1-6, 2012, Amsterdam, Netherlands
ISSN0277-786X
ISBN9780819491435
Article number844204
SubjectCoronagraphy; High contrast imaging; Observing strategy; Post processing; Working angle; Instruments; Millimeter waves; Space telescopes; Adaptive optics
AbstractSmall-angle coronagraphy is technically and scientifically appealing because it enables the use of smaller telescopes, allows covering wider wavelength ranges, and potentially increases the yield and completeness of circumstellar environment - exoplanets and disks - detection and characterization campaigns. However, opening up this new parameter space is challenging. Here we will review the four posts of high contrast imaging and their intricate interactions at very small angles (within the first 4 resolution elements from the star). The four posts are: choice of coronagraph, optimized wavefront control, observing strategy, and post-processing methods. After detailing each of the four foundations, we will present the lessons learned from the 10+ years of operations of zeroth and first-generation adaptive optics systems. We will then tentatively show how informative the current integration of second-generation adaptive optics system is, and which lessons can already be drawn from this fresh experience. Then, we will review the current state of the art, by presenting world record contrasts obtained in the framework of technological demonstrations for space-based exoplanet imaging and characterization mission concepts. Finally, we will conclude by emphasizing the importance of the cross-breeding between techniques developed for both ground-based and space-based projects, which is relevant for future high contrast imaging instruments and facilities in space or on the ground.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Science Infrastructure
Peer reviewedYes
NPARC number21270304
Export citationExport as RIS
Report a correctionReport a correction
Record identifier6cd4b109-1990-4bb0-97f2-969fca359bdc
Record created2014-01-22
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)