Estimation of the adaptive optics long-exposure point spread function using control loop data: recent developments

1997 ◽  
Author(s):  
Jean-Pierre Veran ◽  
Francois J. Rigaut ◽  
Henri Maitre ◽  
Daniel Rouan
Keyword(s):  
Adaptive Optics ◽  
Point Spread Function ◽  
Control Loop ◽  
Point Spread ◽  
Spread Function ◽  
Recent Developments

scholarly journals Pushing point-spread function reconstruction to the next level: application to SPHERE/ZIMPOL

2020 ◽  
Vol 494 (1) ◽  
pp. 775-788 ◽  
Author(s):  
O Beltramo-Martin ◽  
A Marasco ◽  
T Fusco ◽  
D Massari ◽  
J Milli ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Point Spread Function ◽  
Optimal Solution ◽  
Initial Guess ◽  
Control Loop ◽  
Source Characterization ◽  
Point Spread ◽  
Spread Function ◽  
Best Fitting ◽  
Established Technique

ABSTRACT Point-spread function (PSF) reconstruction (PSF-R) is a well-established technique to determine the PSF reliably and accurately from adaptive optics (AO) control-loop data. We have successfully applied this technique to improve the precision of photometry and astrometry for observations of NGC 6121 obtained with the Spectro Polarimetric High-contrast Exoplanet REsearch (SPHERE)/Zurich IMaging POLarimeter (ZIMPOL), which will be presented in a forthcoming Letter. First, we present the methodology we followed to reconstruct the PSF by combining pupil-plane and focal-plane measurements using our PSF-R method PRIME (PSF Reconstruction and Identification for Multiple-source characterization Enhancement), with upgrades of both the model and best-fitting steps compared with previous articles. Secondly, we highlight that PRIME allows us to maintain the PSF fitting residual below 0.2 per cent over 2 hours of observation and using only 30 s of AO telemetry, which may have important consequences for telemetry storage for PSF-R purposes on future 30–40 m class telescopes. Finally, we deploy PRIME in a more realistic regime using faint stars, so as to identify the precision needed on the initial-guess parameters to ensure convergence towards the optimal solution.

Estimation of the adaptive optics long-exposure point-spread function using control loop data

1997 ◽  
Vol 14 (11) ◽  
pp. 3057 ◽  
Author(s):  
Jean-Pierre Véran ◽  
François Rigaut ◽  
Henri Maı̂tre ◽  
Daniel Rouan
Keyword(s):  
Adaptive Optics ◽  
Point Spread Function ◽  
Control Loop ◽  
Point Spread ◽  
Spread Function

Adaptive Optics for Vision: The Eye's Adaptation to Point Spread Function

2003 ◽  
Vol 19 (5) ◽  
Author(s):  
Pablo Artal ◽  
Li Chen ◽  
Enrique J Fernández ◽  
Ben Singer ◽  
Silvestre Manzanera ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Point Spread Function ◽  
Point Spread ◽  
Spread Function

scholarly journals New algorithms for adaptive optics point-spread function reconstruction

2006 ◽  
Vol 457 (1) ◽  
pp. 359-363 ◽  
Author(s):  
E. Gendron ◽  
Y. Clénet ◽  
T. Fusco ◽  
G. Rousset
Keyword(s):  
Adaptive Optics ◽  
Point Spread Function ◽  
Point Spread ◽  
Spread Function ◽  
New Algorithms ◽  
Function Reconstruction

Myopic deconvolution of adaptive optics images by use of object and point-spread function power spectra

1998 ◽  
Vol 37 (21) ◽  
pp. 4614 ◽  
Author(s):  
Jean-Marc Conan ◽  
Laurent M. Mugnier ◽  
Thierry Fusco ◽  
Vincent Michau ◽  
Gérard Rousset
Keyword(s):  
Adaptive Optics ◽  
Point Spread Function ◽  
Power Spectra ◽  
Point Spread ◽  
Spread Function
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