期刊
ASTRONOMY AND COMPUTING
卷 10, 期 -, 页码 121-150出版社
ELSEVIER
DOI: 10.1016/j.ascom.2015.02.002
关键词
Methods: data analysis; Techniques: image processing; Gravitational lensing; Cosmology: observations
资金
- NASA via the Strategic University Research Partnership (SURP) Program of the Jet Propulsion Laboratory, California Institute of Technology
- European Research Council Starting Grant [240672]
- NSF [AST-1138729]
- NASA through Space Telescope Science Institute [HST-AR-12857.01-A]
- NASA [NAS5-26555]
- Sloan Fellowship
- Japan Society for the Promotion of Science (JSPS) Postdoctoral Fellowships for Research Abroad
- JSPS Research Fellowships for Young Scientists
- U.S. Department of Energy [DE- FG02-91ER40690]
- National Science Foundation [PHYS-1066293]
- STFC [ST/L000768/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000768/1] Funding Source: researchfish
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1311924] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1404070] Funding Source: National Science Foundation
- Grants-in-Aid for Scientific Research [14J11501] Funding Source: KAKEN
GALSIM is a collaborative, open-source project aimed at providing an image simulation tool of enduring benefit to the astronomical community. It provides a software library for generating images of astronomical objects such as stars and galaxies in a variety of ways, efficiently handling image transformations and operations such as convolution and rendering at high precision. We describe the GALSIM software and its capabilities, including necessary theoretical background. We demonstrate that the performance of GALSIM meets the stringent requirements of high precision image analysis applications such as weak gravitational lensing, for current datasets and for the Stage IV dark energy surveys of the Large Synoptic Survey Telescope, ESA's Euclid mission, and NASA's WFIRST-AFTA mission. The GALSIM project repository is public and includes the full code history, all open and closed issues, installation instructions, documentation, and wiki pages (including a Frequently Asked Questions section). The GALSIM repository can be found at https://github.com/GalSim-developers/GalSim. (C) 2015 Elsevier B.V. All rights reserved.
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