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Stray light modeling of the James Webb Space Telescope (JWST) Integrated Science Instrument Module (ISIM)

机译:詹姆斯·韦伯太空望远镜(JWST)集成科学仪器模块(ISIM)的杂散光建模

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This paper describes an integrated stray light model of each Science Instrument (SI) in the Integrated Science Instrument Module (ISIM) of the James Webb Space Telescope (JWST) and the Optical Telescope Element Simulator (OSIM), the light source used to characterize the performance of ISIM in cryogenic-vacuum tests at the Goddard Space Flight Center (GSFC). We present three cases where this stray light model was integral to solving questions that arose during the testing campaign - 1) ghosting and coherent diffraction from hardware surfaces in the Near Infrared Imager and Slitless Spectrograph (NIRISS) GR700XD grism mode, 2) ghost spots in the Near Infrared Camera (NIRCam) GRISM modes, and 3) scattering from knife edges of the NIRCam focal plane array masks.
机译:本文描述了James Webb空间望远镜(JWST)和光学望远镜元件模拟器(OSIM)的集成科学仪器模块(ISIM)中每个科学仪器(SI)的集成杂散光模型,这些光源用于表征ISD在戈达德太空飞行中心(GSFC)的低温真空测试中的性能。我们介绍了三种情况,其中该杂散光模型是解决测试活动中出现的问题所不可或缺的-1)在近红外成像仪和无缝隙光谱仪(NIRISS)GR700XD衍射模式下,硬件表面的重影和相干衍射,2) 3)从NIRCam焦平面阵列掩模的刀刃散射。

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