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- W4296415296 abstract "In this article, we provide an alternative up-sampling and PSF deconvolution method for the iterative multi-exposure coaddition. Different from the previous works, the new method has a ratio-correction term, which allows the iterations to converge more rapidly to an accurate representation of the underlying image than those with difference-correction terms. By employing this method, one can coadd the under-sampled multi-exposures to a super-resolution and obtain a higher peak signal-to-noise ratio. A set of simulations show that we can take many advantages of the new method, e.g. in the signal-to-noise ratio, the average deviation of all source fluxes, super-resolution, and source distortion ratio, etc., which are friendly to astronomical photometry and morphology, and benefits faint source detection and shear measurement of weak gravitational lensing. It provides an improvement in fidelity over the previous works tested in this paper." @default.
- W4296415296 created "2022-09-20" @default.
- W4296415296 creator A5050458873 @default.
- W4296415296 creator A5073216396 @default.
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- W4296415296 date "2022-09-15" @default.
- W4296415296 modified "2023-10-18" @default.
- W4296415296 title "Towards Super-resolution via Iterative multi-exposure Coaddition" @default.
- W4296415296 doi "https://doi.org/10.48550/arxiv.2209.07673" @default.
- W4296415296 hasPublicationYear "2022" @default.
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