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Dark Energy Spectroscopic Instrument (DESI)

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测光巡天

为了确定DESI光谱巡天的观测目标,我们已完成了DESI 14,000平方度观测天区内的测光巡天。

这些测光巡天提供了由光学(g,r,z三个波段)和四个红外测光数据组成的北半球河外天区测光数据目录。天区覆盖范围限制在了赤纬-18度至+84度,银纬高于+15度或小于-15度区域。为实现这一目标,整个测光巡天包括了以下三个由不同望远镜观测完成的测光项目,项目细节可见相关链接。

  • DECaLS:DECam巡天, 由位于Cerro Tololo的Blanco望远镜观测完成
  • BASS:北京-亚利桑那巡天, 由位于Kitt Peak的Bok望远镜观测完成
  • MzLS:Mayall z波段巡天, 由位于Kitt Peak的Mayall望远镜观测完成

上述测光巡天数据已公开释放,可于此网站获取数据。

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  • 描绘宇宙图谱
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  • DESI巡天
  • 测光巡天

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