Cosmology Based on the Extended Sky Suevey of Galaxies

1998年6月，SDSS的第一盏灯成功了。经验证，望远镜和CCD相机均按初始设计构造。First Light活动由SDSS日本推进组（JPG）成员执行，JPG成员也参加了测试观察，并参与了CCD相机和主镜设备的调试和测试。他们与美国合作者发表了几份关于新建设备及其在这几年建造期间的性能的技术报告。在SDSS的完成阶段，我们决定进入SDSS与SUBARU望远镜有效连接的新阶段。我们希望在不久的将来，对SDSS发现的新天体的详细观测和对SDSS编目星系的系统后续观测能够顺利进行。特别是，为了获得相同的定性数据水平，使用通用设备是很重要的。然后，我们派了几个JPG成员到夏威夷参加First Light活动，检查马赛克CCD相机是否稳定工作。这些结果为数据分析方法和设备改进提供了有价值的基础数据。JPG成员在SUBARU的First Light活动中发挥了重要作用。对这些数据进行分析，以构建新的仪器，有效地连接SDSS和SUBARU的结果。这些产品将有效地发挥SDSS和SUBARU的最佳作用。

The First Light of SDSS has succeeded in the last June of 1998. It is confirmed that the telescope and CCD camera are constructed according as the initial design. The First Light events were performed by the menbers of SDSS Japan Promotion Group(JPG) and also JPG members have attended the test observations and worked for the tuning and test of CCD camera and the complete equipment of main mirror. They have published several Technical Reports with collaborators of the US with respect to newly constructed devices and their performances during these several constructing years. At the completion phase of SDSS, we decided to go a new stage that SDSS is effectively connected with SUBARU telescope. We hope that the detailed observations of new objects found by SDSS and the systematic follow-up observations of catalogued galaxies by SDSS should be done smoothly in near future. Especially, it is important to use common devices in order to get the same qualitative level of data. Then, we sent several JPG menbers to Hawaii at the First Light event and checked the whether the mosaic CCD camera works stably or not. From these results, we got the valuable fundamentaldata for the method of data analysisi and improvement of devices. The JPG menbers have played important roles in the First Light event of SUBARU.These data were analyzed for constructing new instruments which would efficintly connect the results of SDSS and SUBARU.These products will make effective the best use of SDSS and SUBARU.