Modeling the JANUS stray-light behavior
Date Issued
2018
Author(s)
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Paolinetti, R.
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Barilli, M.
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Turella, A.
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Mugnuolo, R.
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Amoroso, M.
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Castronuovo, M.
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Abstract
JANUS is the camera of the ESA mission JUICE, dedicated to high-resolution imaging in the extended-visible wavelength region (340 - 1080nm). The camera will observe Jupiter and its satellites providing detailed maps of their surfaces and atmospheres. During the mission, the camera will face a huge variety of observing scenarios ranging from the imaging of the surfaces of the satellites under varying illumination conditions to limb observation of the atmospheres. The stray-light performance of JANUS has been studied through non-sequential ray-tracing simulations with the aim to characterize and optimize the design. The simulations include scattering effects produced by micro-roughness and particulate contamination of the optical surfaces, the diffusion from mechanical surfaces and ghost reflections from refractive elements. The results have been used to derive the expected stray-light performance of the instrument and to validate the instrument design.
Coverage
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
All editors
Lystrup, Makenzie; MacEwen, Howard A.; Fazio, Giovanni G.; Batalha, Natalie; Siegler, Nicholas; Tong, Edward C.
Series
Volume
10698
Start page
106984V
Conferenece
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
Conferenece place
Austin, Texas, United States
Conferenece date
10-15 June, 2018
Issn Identifier
0277-786X
Ads BibCode
2018SPIE10698E..4VG
Rights
open.access
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