CanariCam: a multimode mid-infrared camera for the Gran Telescopio CANARIAS
CanariCam: a multimode mid-infrared camera for the Gran Telescopio CANARIAS
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CanariCam：用于 Gran Telescopio CANARIAS 的多模式中红外相机
DOI：
10.1117/12.458979
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
R. Sellar
中科院分区：
文献类型：
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作者：
C. Telesco;D. Ciardi;J. French;C. Ftaclas;K. Hanna;D. Hon;J. Hough;J. Julian;Roger E. Julian;M. Kidger;C. Packham;R. Piña;F. Városi;R. Sellar
佛罗里达大学正在为10.4米的加那利大望远镜开发一种中红外相机。CanariCam有四种科学模式和两种工程模式，使用相同的320 x 240像素、掺砷硅、阻塞杂质带探测器。每个模式可以在观察序列期间快速地远程选择。像素尺度为0.08 arcsec，导致在8 μm处对衍射极限点扩散函数进行奈奎斯特采样，这是CanariCam优化的最短波长。成像的总可用视场为26 arcsec x 19 arcsec。主要的科学模式将是衍射限制成像，使用10微米（8-14微米）和20微米（16-25微米）大气窗口中的几种可用光谱滤波器之一。四个平面光栅中的任何一个都可以插入用于10和20 μm区域的低分辨率和中等分辨率（R = 100 - 1300）的狭缝光谱。插入适当的场和瞳孔光阑将相机转换为日冕仪，而插入内部旋转半波片，场掩模和沃拉斯顿棱镜将相机转换为双光束偏振仪。
The University of Florida is developing a mid-infrared camera for the 10.4-meter Gran Telescopio CANARIAS. CanariCam has four science modes and two engineering modes, which use the same 320 x 240-pixel, arsenic-doped silicon, blocked-impurity-band detector from Raytheon. Each mode can be remotely selected quickly during an observing sequence. The pixel scale is 0.08 arcsec, resulting in Nyquist sampling of the diffraction-limited point-spread-function at 8 μm, the shortest wavelength for which CanariCam is optimized. The total available field of view for imaging is 26 arcsec x 19 arcsec. The primary science mode will be diffraction-limited imaging using one of several available spectral filters in the 10 μm (8-14 μm) and 20 μm (16-25 μm) atmospheric windows. Any one of four plane gratings can be inserted for low and moderate-resolution (R = 100 - 1300) slit spectroscopy in the 10 and 20-μm regions. Insertion of appropriate field and pupil stops converts the camera into a coronagraph, while insertion of an internal rotating half-wave plate, a field mask, and a Wollaston prism converts the camera into a dual-beam polarimeter.