A Deep Wide-Field Weak-Lensing and Photometric Survey

深宽视场弱透镜和光度测量。凯撒正在进行一项深度、多色、广域的光度测量，覆盖了大约13.5平方度，完成了26等。他使用的是加拿大-法国-夏威夷望远镜（CFHT）和夏威夷大学的88英寸望远镜。使用的仪器是为CHFT建造的一个新的12Kx8K CCD相机。这些数据将为在红移1到3之间的微弱背景星系的形状提供引力透镜效应的测量。这些星系的形状被用来生成引力切变场的地图；即前景结构的投影潮汐场。该剪切场的功率谱和自相关性提供了大尺度上原始质量波动的估计。

A deep wide field weak lensing and photometric surveyNicholas KaiserDr. Kaiser is performing a deep, multi-color, wide area photometric survey that covers approximately 13.5 square degrees complete to a magnitude of 26. He is using the Canada-France-Hawaii Telescope (CFHT) and also the University of Hawaii 88 inch telescope. The instrument used is a new 12Kx8K CCD camera built for the CHFT. These data will provide a measure of the gravitational lensing effect on the shapes of the faint background galaxies at redshifts between 1 and 3. The shapes of these galaxies are used to generate a map of the gravitational shear field; i.e., the projected tidal field of foreground structures. The power spectrum and auto-correlation of this shear field provides estimates of the primordial mass fluctuation on large scales.