Successes and challenges of the APP Coronagraph. Issue Volume 8:Issue S299(2013) (6th January 2014)

• Record Type: Journal Article
• Authors: Kenworthy, Matthew A.; Quanz, Sascha; Otten, Gilles; Meshkat, Tiffany; Codona, Johanan; Snik, Frans; Meyer, Michael E.; Kasper, Markus; Girard, Julien
• Is Part Of: Proceedings of the International Astronomical Union. Volume 8:Issue S299(2013)
• Page Start: 40
• Page End: 41
• Publication Date: 2014-01-06
• Subjects: instrumentation: high angular resolution, -- stars: planetary systems, -- stars: individual (β Pic, HD 100546); Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921313007771
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: The Apodizing Phase Plate (APP) coronagraph has been used to image the exoplanet β Pictoris b and the protoplanet candidate around HD 100546, and is currently in use in surveys with NaCo at the VLT. Its success is due to its tolerance to tip-tilt pointing errors in current AO systems, which degrade the performance of nearly all other coronagraphs. Currently the sensitivity of the APP is limited by non-common path errors in the science camera systems and by its chromatic behaviour. We present the achromatized Vector APP coronagraph and address how we will measure and minimise non-common path errors with Focal Plane Wavefront Sensing algorithms.