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Proceedings Paper

A comparison between different coronagraphic data reduction techniques
Author(s): E. Carolo; D. Vassallo; J. Farinato; M. Bergomi; M. Bonavita; A. Carlotti; V. D'Orazi; D. Greggio; D. Magrin; D. Mesa; E. Pinna; A. Puglisi; M. Stangalini; C. Verinaud; V. Viotto
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Paper Abstract

A robust post processing technique is mandatory for analysing the coronagraphic high contrast imaging data. Angular Differential Imaging (ADI) and Principal Component Analysis (PCA) are the most used approaches to suppress the quasi-static structure presents in the Point Spread Function (PSF) for revealing planets at different separations from the host star. In this work, we present the comparison between ADI and PCA applied to System of coronagraphy with High order Adaptive optics from R to K band (SHARK-NIR), which will be implemented at Large Binocular Telescope (LBT). The comparison has been carried out by using as starting point the simulated wavefront residuals of the LBT Adaptive Optics (AO) system, in different observing conditions. Accurate tests for tuning the post processing parameters to obtain the best performance from each technique were performed in various seeing conditions (0:4"–1") for star magnitude ranging from 8 to 12, with particular care in finding the best compromise between quasi static speckle subtraction and planets detection.

Paper Details

Date Published: 27 July 2016
PDF: 13 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99097Q (27 July 2016); doi: 10.1117/12.2232792
Show Author Affiliations
E. Carolo, INAF - Osservatorio Astronomico di Padova (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
D. Vassallo, INAF - Osservatorio Astronomico di Padova (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
Univ. degli Studi di Padova (Italy)
J. Farinato, INAF - Osservatorio Astronomico di Padova (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
M. Bergomi, INAF - Osservatorio Astronomico di Padova (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
M. Bonavita, Royal Observatory (United Kingdom)
A. Carlotti, Institut de Planétologie et d’Astrophysique de Grenoble (France)
V. D'Orazi, INAF - Osservatorio Astronomico di Padova (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
D. Greggio, INAF - Osservatorio Astronomico di Padova (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
Univ. degli Studi di Padova (Italy)
D. Magrin, INAF - Osservatorio Astronomico di Padova (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
D. Mesa, INAF - Osservatorio Astronomico di Padova (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
E. Pinna, INAF - Osservatorio Astrofisico di Arcetri (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
A. Puglisi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
M. Stangalini, INAF - Osservatorio Astronomico di Roma (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)
C. Verinaud, Institut de Planétologie et d’Astrophysique de Grenoble (France)
V. Viotto, INAF - Osservatorio Astronomico di Padova (Italy)
ADONI - Lab. Nazionale Ottiche Adattive (Italy)


Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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