2011MNRAS.418..258B

Query : 2011MNRAS.418..258B

2011MNRAS.418..258B - Mon. Not. R. Astron. Soc., 418, 258-270 (2011/November-3)

3D deconvolution of hyper-spectral astronomical data.

BONGARD S., SOULEZ F., THIEBAUT E. and PECONTAL E.

Abstract (from CDS):

In this paper we present a general method for multichannel image restoration based on regularized χ2. We introduce separable regularizations that account for the dynamics of the model and take advantage of the continuities present in the data, leaving only two hyper-parameters to tune. We illustrate a practical implementation of this method in the context of host galaxy subtraction for the Nearby SuperNova Factory (SNfactory). We show that the image restoration obtained fulfils the stringent requirements on bias and photometricity needed by this programme. The reconstruction yields sub-per cent integrated residuals in all the synthetic filters considered both on real and simulated data. Even though our implementation is tied to the SNfactory data, the method translates to any hyper-spectral data. As such, it is of direct relevance to several new generation instruments like MUSE. Also, this technique could be applied to multiband astronomical imaging for which image reconstruction is important, for example, to increase image resolution for weak-lensing surveys.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): instrumentation: spectrographs - methods: data analysis - techniques: image processing - techniques: imaging spectroscopy - cosmology: observations

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SN 2004gc SN* 05 21 49.949 +06 40 33.71     17.4     SNIa 32 1

Query : 2011MNRAS.418..258B

Basic data :
SN 2004gc -- SuperNova
Other object types: otypes_help 		SN* (2012MNRAS,SN)
ICRS coord. (ep=J2000) : 		05 21 49.949 +06 40 33.71 (Optical) [ ] D 2022PASA...39...46C
FK4 coord. (ep=B1950 eq=1950) : 		05 19 08.534 +06 37 41.73 [ ]
Gal coord. (ep=J2000) : 		196.199544 -16.490557 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 9933 [~] / z(spectroscopic) 0.0337 [~] / cz 10103 [~]
   (Opt) D 2012MNRAS.425.1789S
Spectral type: 		SNIa C 2008yCat....1.2024B
Fluxes (1) :
V 17.4 [~] D 2008yCat.2283....0B
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SN 2004gc

References (32 between 1850 and 2026) (Total 32)
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