标题： 卫星轨迹亮度随轨道高度的变化 显示英文标题

标题： Satellite Streak Brightness Variation with Orbit Height

摘要： 我们研究了基于地面观测站相机中卫星轨迹的视光学亮度随着轨道高度的变化情况。这是通过模拟完成的。有几个因素起作用：卫星到观测站的距离，卫星的大小和几何形状，望远镜孔径的直径，以及卫星图像在其划过相机焦平面时的角速度。对于大孔径望远镜，轨道较低的卫星在无穷远聚焦的相机中变得模糊。对于鲁宾天文台的LSSTCam，我们发现当大型卫星从550公里轨道降低到350公里轨道时，这些因素几乎相互抵消。 显示英文摘要

摘要： We study the apparent optical brightness of satellite streaks in ground-based observatory cameras as the orbit height is varied. This is done via simulations. Several factors are in play: the range to the satellite, satellite size and geometry, the diameter of the telescope aperture, and the angular velocity of the satellite image as it streaks across the camera's focal plane. For a large telescope aperture, a satellite in a lower orbit becomes out-of-focus in a camera focused at infinity. In the case of Rubin Observatory's LSSTCam, we find that these factors nearly cancel as a large satellite is moved from an orbit at 550 km down to 350 km.