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首页> 外文会议>Conference on ground-based and airborne instrumentation for astronomy IV >VIRUS-W: commissioning and first-year results of a new integral field unit spectrograph dedicated to the study of spiral galaxy bulges
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VIRUS-W: commissioning and first-year results of a new integral field unit spectrograph dedicated to the study of spiral galaxy bulges

机译：VIRUS-W：专门研究螺旋星系凸起的新型积分场单位光谱仪的调试和第一年结果

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In November and December 2010 we successfully commissioned a new optical fibre-based Integral Field Unit(IFU) spectrograph at the 2.7m Harlan J. Smith Telescope of the McDonald Observatory in Texas. Regular science observations commenced in spring 2011. The instrument achieves a spectral resolution of λ/Δλ = 8700 with a spectral coverage of 4850Å – 5480Å and a spectacular throughput of 37% including the telescope optics.The design is related to the VIRUS-P instrument that was developed for the HETDEX experiment, but was modified significantly in order to achieve the large spectral resolution that is needed to recover the dynamical properties of disk galaxies. In addition to the high resolution mode, VIRUS-W offers a stellar population mode with a resolution of λ/Δλ = 3300 and a spectral coverage of 4340Å – 6040Å. The IFU is comprised out of 267150 μm-core optical fibers with a fill factor of 1/3. With a beam of f/3.65, the core diameter translates to 3.2" on sky and a large field of view of 105" x 55" that is ideally suited to study the bulge regions of local spiral galaxies. The large throughput is due to a design that operates close to the numerical aperture of the fibers, alarge 200mm aperture refractive camera with no central obscuration, highly efficient volume phase holographic gratings, and a high-QE CCD. We will discuss the design, the performance and briefly present an example for the very up-to-date science that is possible with such instruments at 2m class telescopes.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
机译：在2010年11月和2010年12月，我们成功地在德克萨斯州麦当劳天文台的270万哈兰·史密斯望远镜上启用了一个新的基于光纤的整体场单元（IFU）光谱仪。从2011年春季开始定期进行科学观测。该仪器的光谱分辨率为λ/λ。 = 8700，光谱范围为4850＆Aring; – 5480＆Aring;该设计与用于HETDEX实验的VIRUS-P仪器有关，但为实现恢复动态特性所需的大光谱分辨率而进行了重大修改，该设计与为HETDEX实验开发的VIRUS-P仪器有关。盘状星系。除了高分辨率模式外，VIRUS-W还提供了恒星填充模式，分辨率为λ/Δ。 = 3300，光谱覆盖范围为4340 Aring; – 6040＆Aring;。 IFU由267150μm芯的光纤组成，其填充系数为1/3。使用f / 3.65的光束时，核心直径在天空上转换为3.2英寸，并且大视场为105英寸x 55英寸，非常适合研究局部螺旋星系的凸起区域。接近光纤数值孔径的设计，200毫米孔径的无中央遮挡的折射相机，高效的体积相位全息光栅和高QE CCD，我们将讨论设计，性能并简要介绍一个示例©2（2012）版权所有光电仪器工程师学会（SPIE），仅允许个人下载摘要。

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