CRIRES: a high-resolution infrared spectrograph for ESO's VLT
CRIRES: a high-resolution infrared spectrograph for ESO's VLT
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DOI：
10.1117/12.551480
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发表时间：
2003-03
期刊：
影响因子：
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通讯作者：
H. Kaeufl;P. Ballester;P. Biereichel;B. Delabre;R. Donaldson;R. Dorn;E. Fedrigo;G. Finger;G. Fischer;F. Franza;D. Gojak;G. Huster;Yves Jung;J. Lizon;L. Mehrgan;M. Meyer;A. Moorwood;J. Pirard;J. Paufique;E. Pozna;R. Siebenmorgen;A. Silber;J. Stegmeier;Stefan Wegerer
中科院分区：
文献类型：
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作者：
H. Kaeufl;P. Ballester;P. Biereichel;B. Delabre;R. Donaldson;R. Dorn;E. Fedrigo;G. Finger;G. Fischer;F. Franza;D. Gojak;G. Huster;Yves Jung;J. Lizon;L. Mehrgan;M. Meyer;A. Moorwood;J. Pirard;J. Paufique;E. Pozna;R. Siebenmorgen;A. Silber;J. Stegmeier;Stefan Wegerer
CRIRES 是一款低温、预色散红外中阶梯光栅光谱仪，设计用于在 8m VLT 单元望远镜 #1 (Antu) 的 Nasmyth 焦点 B 处提供 1 至 5μm 之间 105 的分辨率 lambda/(Delta lambda)。曲率传感自适应光学系统馈电用于最大限度地减少狭缝损失并提供沿狭缝的衍射有限空间分辨率。已开发出封装在定制陶瓷板上的 4 个 Aladdin~III InSb 阵列的马赛克。这提供了有效的 4096x512 像素焦平面阵列，以最大化每次曝光中覆盖的自由光谱范围。预计将插入气室来测量高精度径向速度。为了测量圆偏振，可以预见菲涅尔菱形与用于磁多普勒成像的沃拉斯顿棱镜相结合。全光谱偏振测定法的实施正在研究中。这是 2003 年末在 ESO 举办的科学研讨会的成果之一，该研讨会旨在完善 CRIRES 的科学案例。 VLT 的安装计划于 2005 年上半年进行。在此，我们简要回顾一下 CRIRES 的主要设计特点，并描述其当前的开发状况，包括实验室测试报告。
CRIRES is a cryogenic, pre-dispersed, infrared echelle spectrograph designed to provide a resolving power lambda/(Delta lambda) of 105 between 1 and 5mu m at the Nasmyth focus B of the 8m VLT unit telescope #1 (Antu). A curvature sensing adaptive optics system feed is used to minimize slit losses and to provide diffraction limited spatial resolution along the slit. A mosaic of 4 Aladdin~III InSb-arrays packaged on custom-fabricated ceramics boards has been developed. This provides for an effective 4096x512 pixel focal plane array, to maximize the free spectral range covered in each exposure. Insertion of gas cells to measure high precision radial velocities is foreseen. For measurement of circular polarization a Fresnel rhomb in combination with a Wollaston prism for magnetic Doppler imaging is foreseen. The implementation of full spectropolarimetry is under study. This is one result of a scientific workshop held at ESO in late 2003 to refine the science-case of CRIRES. Installation at the VLT is scheduled during the first half of 2005. Here we briefly recall the major design features of CRIRES and describe its current development status including a report of laboratory testing.