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Recurrence quantification analysis as a post-processing technique in adaptive optics high contrast imaging
Author(s): M. Stangalini; G. Li Causi; F. Pedichini; S. Antoniucci; M. Mattioli; J. Christou; G. Consolini; D. Hope; S. M. Jefferies; R. Piazzesi; V. Testa
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Paper Abstract

Recurrence Quantification Analysis (RQA) is a non-linear time series analysis technique widely employed in many different research fields. Among the many applications of this method, it has been shown that it can be successfully employed in the detection of small signals embedded into noise. In this work we explore the possibility of using the RQA in astronomical high contrast imaging, for the detection of faint objects nearby bright sources in very high frame rate (1 KHz) data series. For this purpose, we used a real 1 kHz image sequence of a bright star, acquired with the SHARK-VIS forerunner at LBT. Our results show excellent performances in terms of detection contrasts even with a very short data sequence (a few seconds). The use of RQA in astronomical high contrast imaging is discussed in light of the possible science applications and with respect to other techniques like, for example, the angular differential imaging (ADI) or the Speckle-Free ADI (SFADI).

Paper Details

Date Published: 10 July 2018
PDF: 6 pages
Proc. SPIE 10703, Adaptive Optics Systems VI, 107032V (10 July 2018); doi: 10.1117/12.2313355
Show Author Affiliations
M. Stangalini, INAF - Osservatorio Astronomico di Roma (Italy)
ADONI - Lab. Nazionale di Ottica Adattiva (Italy)
G. Li Causi, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
INAF - Osservatorio Astronomico di Roma (Italy)
F. Pedichini, INAF - Osservatorio Astronomico di Roma (Italy)
ADONI - Lab. Nazionale di Ottica Adattiva (Italy)
S. Antoniucci, INAF - Osservatorio Astronomico di Roma (Italy)
ADONI - Lab. Nazionale di Ottica Adattiva (Italy)
M. Mattioli, INAF - Osservatorio Astronomico di Roma (Italy)
ADONI - Lab. Nazionale di Ottica Adattiva (Italy)
J. Christou, Large Binocular Telescope Observatory, The Univ. of Arizona (United States)
G. Consolini, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
D. Hope, Hart Scientific Consulting International LLC (United States)
S. M. Jefferies, Georgia State Univ. (United States)
Institute for Astronomy, Univ. of Hawai'i (United States)
R. Piazzesi, INAF - Osservatorio Astronomico di Roma (Italy)
ADONI - Lab. Nazionale di Ottica Adattiva (Italy)
V. Testa, INAF - Osservatorio Astronomico di Roma (Italy)
ADONI - Lab. Nazionale di Ottica Adattiva (Italy)


Published in SPIE Proceedings Vol. 10703:
Adaptive Optics Systems VI
Laird M. Close; Laura Schreiber; Dirk Schmidt, Editor(s)

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