The design and alignment of the DECam lenses and modelling of the static shear pattern and its impact on weak lensing measurements

The design and alignment of the DECam lenses and modelling of the static shear pattern and its impact on weak lensing measurements
复制标题

DECam 透镜的设计和对准以及静态剪切模式的建模及其对弱透镜测量的影响

DOI:
10.1117/12.825869
复制
发表时间:
2009
期刊:
--
影响因子:
--
通讯作者:
Antonik M
Antonik M
中科院分区:
--
文献类型:
--
作者:
Antonik M

文献摘要

参考文献

被引文献

相似文献

暗能量调查(DES)将产生覆盖超过5000平方度天空的高质量图像,使用g, r, i, z和Y滤光片,在z = 0.2到z = 1.3之间进行精确的光度红移。暗能量相机(DECam),为这次调查正在建设中,由宽视场校正光学和CCD探测器阵列组成,将提供2.2平方度的视野。它将被放置在智利塞罗·托洛洛美洲天文台的布兰科4米望远镜的主要焦点上。伦敦大学学院(UCL)的光学科学实验室(OSL)正在进行成像系统中五个透镜的对准工作。这些透镜的直径从0.60米到0.98米不等。镜片必须保持在严格的公差范围内,以满足DES科学要求。对弱透镜信号的测量精度决定了测量误差的大小。本文详细介绍了用于容纳透镜的单元的设计以及安装透镜和单元的校准程序。本文还介绍了预期的静态剪切畸变模式,以及这种模式对弱透镜信号测量的影响。
The Dark Energy Survey (DES) will produce high quality images covering over 5000 square degrees of the sky, with precise photometric redshifts between z = 0.2 to z = 1.3, using g, r, i, z and Y filters. The Dark Energy Camera (DECam), under construction for this survey, consists of wide field corrector optics and a CCD detector array that will give a 2.2 square degree field of view. It will be placed at the prime focus of the Blanco 4-meter telescope at the Cerro Tololo Inter-American Observatory in Chile. The Optical Science Laboratory (OSL) at University College London (UCL) is undertaking the alignment of the five lenses in the imaging system. These lenses range in diameter from 0.60 - 0.98 meters. The lenses must be held within tight tolerance limits in order to meet the DES science requirements. The tolerances are especially driven by the accuracy in the measurement of the weak lensing signal. This paper details the design for the cells that will hold the lenses and the alignment procedure for the mounting of the lenses and cells. Also presented is the expected static shear distortion pattern that will be generated and the impact of this pattern on the weak lensing signal measurement.
转换 MMT 的宽视场校正器单元的设计
DOI: 10.1117/12.156628
发表时间: 1993
影响因子: 2.1
作者:
R. Fata;D. Fabricant
通讯作者: D. Fabricant
DOI: --
发表时间: 2006
期刊: SPIE Astronomical Telescopes + Instrumentation
影响因子: --
作者:
S. Kent;R. Bernstein;T. Abbott;B. Bigelow;D. Brooks;P. Doel;B. Flaugher;M. Gladders;A. Walker;S. Worswick
通讯作者: S. Worswick
在宽视场仪器中安装大镜头以用于转换后的 MMT
DOI: 10.1117/12.316812
发表时间: 1998
影响因子: 2.1
作者:
R. Fata;D. Fabricant
通讯作者: D. Fabricant
DOI: --
发表时间: 2008
期刊: Astronomical Telescopes + Instrumentation
影响因子: --
作者:
P. Doel;T. Abbott;M. Antonik;R. Bernstein;B. Bigelow;D. Brooks;H. Cease;D. Depoy;B. Flaugher;M. Gladders;G. Gutiérrez;S. Kent;A. Stefanik;A. Walker;S. Worswick
通讯作者: S. Worswick
为 MMT 的 f/5 广角校正器安装大镜头:经验教训
DOI: 10.1117/12.552289
发表时间: 2004
影响因子: 2.1
作者:
R. Fata;V. Kradinov;D. Fabricant
通讯作者: D. Fabricant