具有星光的光学涡旋：对地面恒星日冕照相术的影响
Optical vortices with starlight: Implications for ground-based stellar coronagraphy
摘要：
使用l = 1闪耀叉全息图在Asiago 122厘米望远镜的焦平面上，我们获得了光学涡旋从恒星系统Rasalgethi（α武仙座）和从单星大角星（α牧夫座）。我们已经分析了从非单色星光在非常差的视宁度条件下获得的光学涡旋的结构，使用快速CCD相机获得散斑图案，并进行幸运成像技术，替代自适应光学。我们在双星HD 74010上插入红色滤光片和Lyot光阑，进行了l = 1的光学涡旋日冕照相。结果与理论和数值模拟相一致。我们的研究结果为光学涡旋在地基天文观测中的应用开辟了道路，特别是在使用l > 1掩模的日冕照相中。在星光中没有检测到内禀轨道角动量。
英文摘要：
Using an l = 1 blazed fork-hologram at the focal plane of the Asiago 122 cm telescope, we obtained optical vortices from the stellar system Rasalgethi (alpha Herculis) and from the single star Arcturus (alpha Bootis). We have analyzed the structure of the optical vortices obtained from non-monochromatic starlight under very poor seeing conditions using a fast CCD camera to obtain speckle patterns and carry out the lucky imaging technique, alternative to adaptive optics. With the insertion of a red filter and of a Lyot stop we performed l = 1 optical vortex coronography the double star HD74010. The results are in agreement with theory and numerical simulations. Our results open the way to applications of optical vortices to ground based astronomical observations, in particular for coronagraphy with l > 1 masks. No intrinsic orbital angular momentum was detected in the starlight.
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。
