How to Tame Your Dragon’s Breath: Edge Design to Minimize Scattered Light from Sources Outside of SPHEREx Field of View
收藏DataCite Commons2024-07-21 更新2025-04-16 收录
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http://dataverse.jpl.nasa.gov/citation?persistentId=doi:10.48577/jpl.G8KWCH
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The SPHEREx satellite will survey the entire sky between 0.75 - 5.0 um in over 100 wavelengths with spectral resolving power R = 35 to 130 to study cosmic inflation, the history of galaxy formation, and biogenic ices in the Milky Way. The instrument uses six HAWAII-2RG detectors and linear variable filters (LVF) that sort incoming photons into different wavelengths along one spatial direction of the detectors. To minimize the scattered light produced when sources outside of SPHEREx field of view land on the LVF mounting frame (also known as "dragon’s breath"), a scale model was tested to refine a double undercut edge design and coating recipe that halves the ghost size and reduces the ghost’ intensity by 10-fold. We present here the edge design, the scale model experiment, and the characterization of the ghost in the flight telescope.
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Root
创建时间：
2024-07-21
