Engineering Observation in November 2021
![](https://pfs.ipmu.jp/blog/wp-content/uploads/2021/12/run04_DSC_0490-176x176.jpg)
Two months after on-telescope test by integrating subsystems, we had another engineering observation (engineering run) on three nights in November 2021. In this article, we’re going to tell a story about our work around the engineering nights. Although we made big progresses in fiber configuration etc. during the September run, we also found a couple of major issues on Prime… Read more »