Focus and Alignment of the Dark Energy Camera Using Out-Of-Focus Stars

被引：5

作者：

Roodman, Aaron ^{[1
]}

机构：

[1] Stanford Univ, SLAC Natl Accelerator Lab, Kavli Inst Particle Astrophys & Cosmol, Menlo Pk, CA USA

来源：

GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY IV | 2012年 / 8446卷

关键词：

DECam; DES; Active Optics; Wavefront Sensors; Curvature Sensors; Donuts; SYSTEM;

D O I：

10.1117/12.926671

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The active optics system of the Dark Energy Camera (DECam) at the CTIO 4 meter Blanco telescope, built for the Dark Energy Survey, uses out-of-focus stars (donuts) to determine the camera's focus and alignment ,as well as provide a measure of the wavefront. In this paper, we describe the donut analysis algorithm and present results on focus, alignment, and wavefront from a donut campaign conducted at the Blanco from 2010 to 2012, using the previous wide-field camera.

引用

页数：10

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