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See detailDeconvolution with Correct Sampling
Magain, Pierre ULg; Courbin, F.; Sohy, Sandrine ULg

in Astrophysical Journal (1998), 494

A new method for improving the resolution of astronomical images is presented. It is based on the principle that sampled data cannot be fully deconvolved without violating the sampling theorem. Thus, the ... [more ▼]

A new method for improving the resolution of astronomical images is presented. It is based on the principle that sampled data cannot be fully deconvolved without violating the sampling theorem. Thus, the sampled image should be deconvolved not by the total point-spread function but by a narrower function chosen so that the resolution of the deconvolved image is compatible with the adopted sampling. Our deconvolution method gives results that are, in at least some cases, superior to those of other commonly used techniques: in particular, it does not produce ringing around point sources superposed on a smooth background. Moreover, it allows researchers to perform accurate astrometry and photometry of crowded fields. These improvements are a consequence of both the correct treatment of sampling and the recognition that the most probable astronomical image is not a flat one. The method is also well adapted to the optimal combination of different images of the same object, as can be obtained, e.g., from infrared observations or via adaptive optics techniques. [less ▲]

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See detailDeconvolution with correct sampling.
Magain, Pierre ULg; Courbin, F.; Sohy, Sandrine ULg

in The Messenger (1997), 88

The authors briefly describe the basic ideas behind a new deconvolution technique which overcomes some of the drawbacks of the traditional methods and which gives results of high photometric and ... [more ▼]

The authors briefly describe the basic ideas behind a new deconvolution technique which overcomes some of the drawbacks of the traditional methods and which gives results of high photometric and astrometric accuracy. The authors also show how it can be combined with other techniques (e.g. adaptive optics) to give even better results. [less ▲]

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See detailA deconvolution-based algorithm for crowded field photometry with unknown point spread function
Magain, Pierre ULg; Courbin, F.; Gillon, Michaël ULg et al

in Astronomy and Astrophysics (2007), 461

A new method is presented for determining the point spread function (PSF) of images that lack bright and isolated stars. It is based on the same principles as the MCS image deconvolution algorithm. It ... [more ▼]

A new method is presented for determining the point spread function (PSF) of images that lack bright and isolated stars. It is based on the same principles as the MCS image deconvolution algorithm. It uses the information contained in all stellar images to achieve the double task of reconstructing the PSFs for single or multiple exposures of the same field and to extract the photometry of all point sources in the field of view. The use of the full information available allows us to construct an accurate PSF. The possibility to simultaneously consider several exposures makes it well suited to the measurement of the light curves of blended point sources from data that would be very difficult or even impossible to analyse with traditional PSF fitting techniques. The potential of the method for the analysis of ground-based and space-based data is tested on artificial images and illustrated by several examples, including HST/NICMOS images of a lensed quasar and VLT/ISAAC images of a faint blended Mira star in the halo of the giant elliptical galaxy NGC 5128 (Cen A). [less ▲]

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See detailDeconvolving spectra of lensing galaxies, QSO hosts, and more ...
Courbin, F.; Magain, Pierre ULg; Sohy, Sandrine ULg et al

in The Messenger (1999), 97

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See detailDeconvolving Spectra: Near-IR Spectroscopy of the Lens and Source in HE 1104-1805
Courbin, F.; Lidman, C.; Meylan, G. et al

in Brainerd, T. G.; Kochanek, C. S. (Eds.) Gravitational Lensing: Recent Progress and Future Go (2001, January 01)

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See detailLe décor des bâtons percés paléolithiques
Noiret, Pierre ULg

in Art&Fact (1990), 9

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See detailLe décor des bâtons percés paléolithiques
Noiret, Pierre ULg

Master's dissertation (1989)

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See detailLe décor des bâtons percés paléolithiques
Noiret, Pierre ULg

Book published by Service de Préhistoire de l'Université de Liège (1990)

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See detailLe décor des bâtons percés
Noiret, Pierre ULg

in Préhistoire ariégeoise - Bulletin de la Société préhistorique Ariège-Pyrénées (1991), XLVI

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See detailDécorer une domus au temps du second triumvirat. Le programme iconographique de l’oecus des nains à Ostia Antica
Morard, Thomas ULg

in Bocherens, Christophe (Ed.) Nani in Festa. Iconografia, religione e politica a Ostia durante il secondo triumvirato (2013, September 19)

Detailed reference viewed: 55 (11 ULg)
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See detailDécors, reconstitutions et illusions
Drouguet, Noémie ULg

in L'invitation au musée. Courrier du patrimoine culturel de la Communauté française (2011), 26

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See detailDecoupling of heavy sneutrinos in low-scale seesaw models
Krauss, Manuel E.; Porod, Werner; Staub, Florian et al

in Physical Review. D, Particles, Fields, Gravitation, and Cosmology (2014), 90(1), 013008

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See detailDécouverte d'arkose tourmalinifère dans les psammites de Fooz.
Malaise, Constantin ULg

in Annales de la Société Géologique de Belgique (1911), 38

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See detailLa découverte d'or natif dans le quartzite devellien de Hourt autorise un autre regard sur le site de Rompt-le-Cou
Hanson, Alain ULg; Dehove, J.; Debbaut, Vincent ULg et al

in Glain et Salm. Haute Ardenne (1999), 51

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See detailDécouverte d'un calcaire silurien (marbre noir), le plus ancien de la Belgique
Malaise, Constantin ULg

in Annales de la Société Géologique de Belgique (1901), 28

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See detailDécouverte d’un dépôt de deux poignards en silex turonien supérieur de la région du Grand-Pressigny à Parçay-sur-Vienne (Indre-et-Loire, France).
Pailler, Y.; Arquille, J.; Gardère, P. et al

in Bulletin des amis du musée de Préhistoire du Grand-Pressigny (2013)

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