地面望远镜上的光学涡旋日冕仪
Optical vortex coronagraphs on ground-based telescopes
摘要：
光学涡旋日冕仪是一种潜在的非常有效的装置，至少对于理想的无遮挡望远镜来说是这样。然而，大多数地面望远镜都受到中心遮蔽的影响，并且还必须通过湍流大气的像差进行操作。本文分析了这种情况下光学涡旋的性能，并与其他一些设计进行了比较，表明它在这种情况下的性能相似。有一个大类的这种一般类型的日冕仪，它们之间的选择在特定的应用程序取决于在小离轴距离和均匀性的响应在焦平面的性能细节。必要公差的可制造性问题也可能很重要。
英文摘要：
The optical vortex coronagraph is potentially a remarkably effective device, at least for an ideal unobstructed telescope. Most ground-based telescopes however suffer from central obscuration and also have to operate through the aberrations of the turbulent atmosphere. This note analyzes the performance of the optical vortex in these circumstances and compares to some other designs, showing that it performs similarly in this situation. There is a large class of coronagraphs of this general type, and choosing between them in particular applications depends on details of performance at small off-axis distances and uniformity of response in the focal plane. Issues of manufacturability to the necessary tolerances are also likely to be important.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
