论文标题
重力采集摄像头：表征结果
GRAVITY acquisition camera: characterization results
论文作者
论文摘要
重力采集摄像机实现了四个光学功能，以跟踪非常大的望远镜干涉仪（VLTI）的多个光束：a）瞳孔跟踪器：$ 2 \ times 2 $ lenslet图像四个瞳孔参考激光器安装在望远镜二级镜蜘蛛上的瞳孔参考激光器； b）现场跟踪器：图像科学对象； c）学生成像师：重新成像望远镜学生； d）畸变跟踪器：图像棚屋。使用专用的数据减少软件，每0.7 s进行一次性摄像头探测器图像的光束稳定参数的估计。测得的参数用于：a）重力与VLTI的对齐； b）主动瞳孔和场稳定； c）散焦校正和工程目的。该仪器现在正在成功地在封闭循环中运行Sky。报告了相关的数据降低和天上表征结果。
GRAVITY acquisition camera implements four optical functions to track multiple beams of Very Large Telescope Interferometer (VLTI): a) pupil tracker: a $2 \times 2$ lenslet images four pupil reference lasers mounted on the spiders of telescope secondary mirror; b) field tracker: images science object; c) pupil imager: reimages telescope pupil; d) aberration tracker: images a Shack-Hartmann. The estimation of beam stabilization parameters from the acquisition camera detector image is carried out, for every 0.7 s, with a dedicated data reduction software. The measured parameters are used in: a) alignment of GRAVITY with the VLTI; b) active pupil and field stabilization; c) defocus correction and engineering purposes. The instrument is now successfully operational on-sky in closed loop. The relevant data reduction and on-sky characterization results are reported.
