Advanced image slicers for integral field spectroscopy with UKIRT and GEMINI
Advanced image slicers for integral field spectroscopy with UKIRT and GEMINI
复制标题
用于 UKIRT 和 GEMINI 积分场光谱的高级图像切片器
DOI：
10.1117/12.317262
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
R. Content
中科院分区：
文献类型：
--
作者：
R. Content
本文描述了达勒姆大学研制的二维面光谱图像切片器的新设计。该装置充当望远镜和光谱仪之间的耦合器，将正方形或矩形的场重新格式化为长缝。讨论了它与以往采用光纤、透镜或窄带出射的图像切割器和其他方法相比的优点，主要是：大视场、高空间分辨率、光谱分辨率元素多、透过率高、仪器尺寸小。该系统也很容易冷却，因此非常适合红外光谱。提出的设计是一种新型的图像切割器，它将原始的二维图像分割成狭窄的子图像，然后并排重新成像，在光谱仪输入端形成长的一维图像。通过对5种不同的切片机设计的描述，突出了在这种新设计的基础上概念的灵活性。其中三个是用于未来设备的，目前处于设计阶段：CGS4切片器(UKIRT)、UTST切片器(UKIRT)和GNIRS切片器(Gemini)；另外两个是对未来可能在转基因生物(Gemini)和NGST上使用的切片器的研究。这些设计展示了如何轻松地将我们的切片机添加到现有仪器中，如何将其整合到狭缝轮式仪器中，以及多狭缝重新格式化如何允许更大的视野。
The new design ofimage slicer developed at Durham University for two-dimensional area spectroscopy is described. The unit acts as a coupler between the telescope and a spectrograph to reformat a square or rectangular field into a long slit. Its advantages over previous designs of image slicers and other methods using fibres, lenses or narrow-band ifitering are discussed, mainly: Large field, high spatial resolution, large number of spectral resolution elements, high transmission, and the small size ofthe instrunient. The system is also easy to cool and is then well suited for infrared spectroscopy. The proposed design is a new type of image slicer in which the original two-dimensional image is sliced into narrow sub-images that are re-imaged side by side to fonn a long one-dimensional image at the spectrograph input. The flexibility ofthe concept at the base ofthis new design is highlighted through the description of 5different slicer designs. Three of these are for future instnunents now at the design phase: The CGS4 slicer (UKIRT), the UTST slicer (UKIRT) and the GNIRS slicer (GEMINI); the two others are studies for possible future slicers on GMOS (GEMINI) and NGST. These designs show how easily our slicer can be added to an existing instrument, how it can be incorporated to the slit wheel offliture instruments, and how multi-slit reformatting permits a much larger field of view.