LSST beam simulator

It is always important to test new imagers for a mosaic camera before device acceptance and constructing the mosaic. This is particularly true of the LSST CCDs due to the fast beam illumination: at long wavelengths there can be significant beam divergence (defocus) inside the silicon because of the...

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Bibliographic Details
Published in:Journal of instrumentation 2014-07, Vol.9 (7), p.C07010-C07010
Main Authors: Tyson, J A, Sasian, J, Claver, C, Muller, G, Gilmor, K, Klint, M
Format: Article
Language:English
Subjects:
Construction
Devices
Focal plane
Instrumentation
Mosaics
Photon beams
Simulation
Sky
Spectral emissivity
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Summary:It is always important to test new imagers for a mosaic camera before device acceptance and constructing the mosaic. This is particularly true of the LSST CCDs due to the fast beam illumination: at long wavelengths there can be significant beam divergence (defocus) inside the silicon because of the long absorption length for photons near the band gap. Moreover, realistic sky scenes need to be projected onto the CCD focal plane Thus, we need to design and build an f/1.2 re-imaging system. The system must simulate the entire LSST super(1) operation, including a sky with galaxies and stars with approximately black-body spectra superimposed on a spatially diffuse night sky emission with its complex spectral features.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/9/07/C07010