The result of the only known good quality observations of September 18, 2017 Venus occultation by the Moon is presented in this article. This kind of observation can be done by students using a common camera, and the analysis can be designed as a mathematics and physics exercise. Several observations were carried out in Malang and Jakarta, but high quality data were obtained only in Jakarta. An analysis of the occultation geometry then showed that the shortest distance between Venus and the center of the Moon disk was 249 arcsec. We were also able to fit the occultation light curve with a simple geometric model using an additional correction factor (1 + sin² ϕ) to compensate for the hill-shaped intensity variation in the Venus disk.

本文介绍了 2017 年 9 月 18 日金星掩星的唯一已知高质量观测结果。这种观察可以由学生使用普通相机完成，分析可以设计为数学和物理练习。在玛琅和雅加达进行了几次观测，但仅在雅加达获得了高质量的数据。对掩星几何的分析表明，金星和月球盘中心之间的最短距离为 249 弧秒。我们还能够使用一个简单的几何模型拟合掩星光曲线，使用额外的校正因子 (1 + sin ²  ϕ ) 来补偿金星盘中的山形强度变化。