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
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
Antonik M
中科院分区:
文献类型:
--
作者:
Antonik M
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.
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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
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
影响因子:
2.1
作者:
R. Fata;V. Kradinov;D. Fabricant
通讯作者:
D. Fabricant