The Marshall Grazing Incidence X-ray Spectrometer (MaGIXS) is a slit spectrograph designed to fly on a sounding-rocket and to observe the Sun in soft X-rays (SXRs) to determine the frequency of coronal heating events. The MaGIXS wavelength range (≈ 0.6 – 2.5 nm) has a significant number of diagnostic lines formed at coronal temperatures, but developing SXR instrumentation presents several challenges, including how to efficiently perform context imaging. A slitjaw image is required for pointing the instrument during flight and for co-alignment with coordinated data sets after flight, but operating in the SXR regime implies that a simple normal-incidence optical system could not be employed to image the same wavelength range as the spectrograph. Therefore, to avoid the complexity of additional grazing-incidence optics, the MaGIXS slitjaw system is designed to image in the extreme ultraviolet (EUV) between roughly 20 – 80 nm. The temperature sensitivity of this EUV bandpass will observe complementary features visible to the MaGIXS instrument. The image on the slitjaw is then converted, via a phosphor coating, to readily detectable visible light. Presented here is the design, implementation, and characterization of the MaGIXS slitjaw imaging system. The slitjaw instrument is equipped with an entrance filter that passes EUV light, along with X-rays, onto the slit, exciting a fluorescent coating and causing it to emit in the visible. This visible light can then be imaged by a simple implementation of commercial off-the-shelf (COTS) optics and low-light camera. Such a design greatly reduces the complexity of implementing and testing the slitjaw imager for an X-ray instrument system and will accomplish the pointing and co-alignment requirements for MaGIXS.

在马歇尔掠入射X射线光谱仪(MaGIXS) 是一种狭缝光谱仪，设计用于在探空火箭上飞行并在软 X 射线 (SXR) 中观察太阳，以确定日冕加热事件的频率。MaGIXS 波长范围（≈ 0.6 – 2.5 nm）在日冕温度下形成了大量诊断线，但开发 SXR 仪器提出了几个挑战，包括如何有效地执行上下文成像。需要使用狭缝图像来在飞行期间指向仪器并在飞行后与协调数据集共同对准，但在 SXR 范围内运行意味着不能使用简单的法向入射光学系统来对与光谱仪。因此，为了避免额外掠入射光学器件的复杂性，MaGIXS 狭缝系统设计用于在大约 20 – 80 nm 之间的极紫外 (EUV) 下成像。这种 EUV 带通的温度敏感性将观察到 MaGIXS 仪器可见的互补特征。然后通过荧光涂层将狭缝钳上的图像转换为易于检测的可见光。这里介绍的是 MaGIXS 狭缝成像系统的设计、实施和表征。狭缝仪器配备了一个入口滤光片，可将 EUV 光和 X 射线一起传递到狭缝上，激发荧光涂层并使其在可见光中发射。然后可以通过商业现货 (COTS) 光学器件和低光相机的简单实现对这种可见光进行成像。