A New Galaxy Redshift Survey at the Las Campanas Observatory

对星系的红移调查将使天文学家能够推断出我们宇宙的大范围物理结构。来自星系的光的红移取决于到星系的距离。将进行一项史无前例的星系红移调查。该星系样本将使用智利拉斯坎帕纳斯1米望远镜的扫描电荷耦合装置(CCD)相机进行光电选择。在拉斯坎帕纳斯2.5米望远镜的宽视场卡塞格伦焦点上，将使用多目标光谱技术获得20,000个星系的红移。星系红移的中位数将是每秒18,000公里。这项调查将抽样800平方度，分布在天空的1/4度区域。大量的调查将在最大的可行尺度上揭示星系分布的特征。调查的高采样密度将详细揭示我们宇宙内星系分布中星团和空洞的性质。

A redshift survey of galaxies will enable astronomers to infer the physical structure of our Universe out to large distances. The redshift of the light from galaxies depends on the distance to the galaxy. A new galaxy redshift survey of unprecedented size will be carried out. The galaxy sample will be selected photo-electrically using the scanning Charge-Coupled Device (CCD) camera at the Las Campanas 1-meter telescope in Chile. Redshifts for 20,000 galaxies will be obtained using multiple-object spectroscopy at the wide-field Cassegrain focus of the Las Campanas 2.5-meter telescope. The median galaxy redshift will be 18,000 kilometers per seconds. The survey will sample 800 square degrees distributed over an area of one steradian of the sky. The large volume of the survey will reveal features in the galaxy distribution at the largest practicable scales. The high sampling density of the survey will reveal in detail the nature of clusters and voids in the galaxy distribution within our Universe.