DECam在望远镜模拟器上的集成测试
DECam integration tests on telescope simulator
摘要：
暗能量巡天（DES）是下一代光学巡天，旨在使用四个探测器测量宇宙的膨胀历史：弱引力透镜，星系团计数，重子声学振荡和Ia型超新星。为了进行调查，DES合作正在建造暗能量相机（DECam），这是一个3平方度，570百万像素的CCD相机，将安装在塞罗托洛洛美洲天文台的布兰科4米望远镜上。DES将在5个过滤器（g，r，i，z，Y）中测量5000平方度的南银河帽。DECam将由74个250微米厚的全耗尽CCD组成：62个2k x 4k CCD用于成像，12个2k x 2k CCD用于引导和聚焦。DECam的建设已接近完成。为了验证相机是否符合DES的技术规格，并减少调试仪器所需的时间，我们建造了一个全尺寸的望远镜模拟器，并在发货前进行了完整的系统测试和集成。为了完成这一全面的测试阶段，我们模拟了DES观测运行，其中我们收集了4个晚上的数据。我们报告的结果，这些独特的测试进行的DECam及其对实验进展的影响。
英文摘要：
The Dark Energy Survey (DES) is a next generation optical survey aimed at measuring the expansion history of the universe using four probes: weak gravitational lensing, galaxy cluster counts, baryon acoustic oscillations, and Type Ia supernovae. To perform the survey, the DES Collaboration is building the Dark Energy Camera (DECam), a 3 square degree, 570 Megapixel CCD camera which will be mounted at the Blanco 4-meter telescope at the Cerro Tololo Inter- American Observatory. DES will survey 5000 square degrees of the southern galactic cap in 5 filters (g, r, i, z, Y). DECam will be comprised of 74 250 micron thick fully depleted CCDs: 62 2k x 4k CCDs for imaging and 12 2k x 2k CCDs for guiding and focus. Construction of DECam is nearing completion. In order to verify that the camera meets technical specifications for DES and to reduce the time required to commission the instrument, we have constructed a full sized telescope simulator and performed full system testing and integration prior to shipping. To complete this comprehensive test phase we have simulated a DES observing run in which we have collected 4 nights worth of data. We report on the results of these unique tests performed for the DECam and its impact on the experiments progress.
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