Mastcam-Z is a multispectral, stereoscopic imaging investigation on the Mars 2020 mission’s Perseverance rover. Mastcam-Z consists of a pair of focusable, 4:1 zoomable cameras that provide broadband red/green/blue and narrowband 400-1000 nm color imaging with fields of view from 25.6° × 19.2° (26 mm focal length at 283 μrad/pixel) to 6.2° × 4.6° (110 mm focal length at 67.4 μrad/pixel). The cameras can resolve (≥ 5 pixels) ∼0.7 mm features at 2 m and ∼3.3 cm features at 100 m distance. Mastcam-Z shares significant heritage with the Mastcam instruments on the Mars Science Laboratory Curiosity rover. Each Mastcam-Z camera consists of zoom, focus, and filter wheel mechanisms and a 1648 × 1214 pixel charge-coupled device detector and electronics. The two Mastcam-Z cameras are mounted with a 24.4 cm stereo baseline and 2.3° total toe-in on a camera plate ∼2 m above the surface on the rover’s Remote Sensing Mast, which provides azimuth and elevation actuation. A separate digital electronics assembly inside the rover provides power, data processing and storage, and the interface to the rover computer. Primary and secondary Mastcam-Z calibration targets mounted on the rover top deck enable tactical reflectance calibration. Mastcam-Z multispectral, stereo, and panoramic images will be used to provide detailed morphology, topography, and geologic context along the rover’s traverse; constrain mineralogic, photometric, and physical properties of surface materials; monitor and characterize atmospheric and astronomical phenomena; and document the rover’s sample extraction and caching locations. Mastcam-Z images will also provide key engineering information to support sample selection and other rover driving and tool/instrument operations decisions.

Mastcam-Z 是对火星 2020 任务的恒心漫游车进行的多光谱立体成像研究。Mastcam-Z 由一对可聚焦、4:1 可变焦相机组成，可提供宽带红/绿/蓝和窄带 400-1000 nm 彩色成像，视野范围为 25.6° × 19.2°（26 mm 焦距，283 μrad/像素）至 6.2° × 4.6°（110 mm 焦距，67.4 μrad/像素）。相机可以在 2 m 处分辨（≥ 5 像素）~0.7 mm 的特征，在 100 m 的距离处可以分辨~3.3 cm 的特征。Mastcam-Z 与火星科学实验室好奇号上的 Mastcam 仪器共享重要传统漫游者。每个 Mastcam-Z 相机都由变焦、聚焦和滤光轮机构以及 1648 × 1214 像素的电荷耦合器件检测器和电子设备组成。两台 Mastcam-Z 摄像机安装在 24.4 cm 立体基线和 2.3° 总前束角的摄像机板上，距离火星车遥感桅杆表面上方 2 m，提供方位角和仰角驱动。流动站内部的一个单独的数字电子组件提供电力、数据处理和存储，以及与流动站计算机的接口。安装在流动站顶部甲板上的主要和次要 Mastcam-Z 校准目标可实现战术反射率校准。Mastcam-Z 多光谱、立体和全景图像将用于提供详细的形态学、地形和沿流动站遍历的地质背景；约束矿物学、光度学、表面材料的物理性能；监测和表征大气和天文现象；并记录流动站的样本提取和缓存位置。Mastcam-Z 图像还将提供关键工程信息，以支持样本选择和其他流动站驾驶和工具/仪器操作决策。