Cosmology Based on the Extended Sky Suevey of Galaxies

SDSS的第一道亮光已于1998年6月底成功。确定了望远镜和CCD相机按初始设计方案进行了结构设计。第一次亮光活动由SDSS日本推广小组(JPG)的成员进行，JPG成员也参加了测试观测，并参与了CCD相机和主镜成套设备的调试和测试。他们已经与美国的合作者发布了几份关于新制造的设备及其在这几个建造年中的性能的技术报告。在SDSS的完成阶段，我们决定进入SDSS与斯巴鲁望远镜有效连接的新阶段。我们希望SDSS对发现的新天体的详细观测和SDSS对编目星系的系统后续观测在不久的将来应该能够顺利完成。尤其重要的是，为了获得相同的质量水平的数据，使用常见的设备是很重要的。然后，我们派了几名JPG成员在第一次灯光活动中前往夏威夷，并检查了马赛克CCD相机是否工作稳定。从这些结果中，我们得到了有价值的基础数据，为数据分析方法和设备的改进提供了依据。JPG记录仪在SUBARU的第一次光线事件中发挥了重要作用，这些数据被分析用于构建新的仪器，有效地连接SDSS和SUBARU的结果，这些产品将有效地利用SDSS和SUBARU。

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.