Binospec: A Wide-field Imaging Spectrograph for the MMT
Binospec: A Wide-field Imaging Spectrograph for the MMT
复制标题
DOI：
10.1088/1538-3873/ab1d78
复制
发表时间：
2019-05
影响因子：
3.5
通讯作者：
D. Fabricant;R. Fata;H. Epps;T. Gauron;Mark Mueller;Joseph M. Zajac;S. Amato;J. Barberis;H. Bergner;P. Brennan;Warren L. Brown;I. Chilingarian;J. Geary;V. Kradinov;B. McLeod;Matthew J. Smith;D. Woods
中科院分区：
文献类型：
--
作者：
D. Fabricant;R. Fata;H. Epps;T. Gauron;Mark Mueller;Joseph M. Zajac;S. Amato;J. Barberis;H. Bergner;P. Brennan;Warren L. Brown;I. Chilingarian;J. Geary;V. Kradinov;B. McLeod;Matthew J. Smith;D. Woods
Binospec是一种高通量，370到1000纳米的成像光谱仪，可处理两个相邻的8 ‘ × 15 ’视场。Binospec于2017年底在650万MMT的f/5焦距上投入使用，现在可供所有MMT观测者使用。用激光切割机从不锈钢切割的孔径掩模用于定义入口孔径，范围从15 '长的狭缝到数百个2″狭缝。系统吞吐量，包括MMT的反射镜和f/5宽视场校正器，峰值为30%。三个反射光栅，为两个光束复制，提供分辨率（λ/Δλ）之间1300和>5000与1″宽狭缝。两个穿过掩模的导引器用于目标采集、掩模对准、导引和精确偏移。一个全职的沙克-哈特曼波前传感器允许连续调整主镜支撑力，望远镜准直和焦点。主动挠性控制在不同的重力和热条件下保持光谱仪对准和聚焦。
Binospec is a high-throughput, 370 to 1000 nm, imaging spectrograph that addresses two adjacent 8′ by 15′ fields of view. Binospec was commissioned in late 2017 at the f/5 focus of the 6.5 m MMT and is now available to all MMT observers. Aperture masks cut from stainless steel with a laser cutter are used to define the entrance apertures that range from 15′ long slits to hundreds of 2″ slitlets. System throughputs, including the MMT’s mirrors and the f/5 wide-field corrector peak at ∼30%. Three reflection gratings, duplicated for the two beams, provide resolutions (λ/Δλ) between 1300 and >5000 with a 1″ wide slit. Two through-the-mask guiders are used for target acquisition, mask alignment, guiding, and precision offsets. A full-time Shack-Hartmann wavefront sensor allows continuous adjustment of primary mirror support forces, telescope collimation and focus. Active flexure control maintains spectrograph alignment and focus under varying gravity and thermal conditions.