Title: Development of a Lunar Scintillometer as part of the National Large Optical Telescope Site Survey Show Chinese title

Title: 作为国家大型光学望远镜台址勘测的一部分开发月震仪

Abstract: Ground layer turbulence is a very important site characterization parameter used to assess the quality of an astronomical site. The Lunar Scintillometer is a simple and effective site-testing device for measuring the ground layer turbulence. It consists of a linear array of photodiodes which are sensitive to the slight variations in the moon's brightness due to scintillation by the lower layers of the Earth's atmosphere. The covariance of intensity values between the non-redundant photodiode baselines can be used to measure the turbulence profile from the ground up to a height determined by the furthest pair of detectors. The six channel lunar scintillometer that has been developed at the Indian Institute of Astrophysics is based closely on an instrument built by the team led by Andrei Tokovinin of Cerro Tololo Inter-American Observatory (CTIO), Chile. We have fabricated the instrument based on the existing electronic design, and have worked on the noise analysis, an EMI (Electromagnetic Induction) resistant PCB design and the software pipeline for analyzing the data from the same. The results from the instrument's multi-year campaign at Mount Saraswati, Hanle is also presented. Show Chinese abstract

Abstract: 地表层湍流是用于评估天文台址质量的一个非常重要的场地特征参数。 月震仪是一种用于测量地表层湍流的简单而有效的场地测试设备。 它由一个线性排列的光电二极管阵列组成，这些光电二极管对由于地球低层大气闪烁引起的月球亮度的微小变化敏感。 非冗余光电二极管基线之间强度值的协方差可以用来测量从地面到由最远的一对探测器确定的高度范围内的湍流剖面。 印度天文物理研究所开发的六通道月震仪紧密基于由智利Cerro Tololo美洲天文台（CTIO）Andrei Tokovinin领导的团队所建造的仪器。 我们根据现有的电子设计制造了该仪器，并对噪声分析、抗电磁干扰（EMI）的印制电路板设计以及用于分析该仪器数据的软件流程进行了研究。 此外，还展示了该仪器在哈内勒Mount Saraswati多年观测活动的结果。