As shown in Figure 3, the aberration spot shape is highly variable across the focal plane, so that a fine grid is necessary for a subsequent good interpolation to any pixel position and hence 9 field and 9 wavelengths are used. The infrared detector is a 2048 x 2048 HgCdTe array (HAWAII-2) that has been developed by the Rockwell Science Center for this project. interferometry of infrared light to estimate the time of flight of light scattered from structures within a sample, providing micron-level spatial resolution. ZEMAX and receiving a string an swer containing numeric valu es, or a confirmation that a data file has been written. The visible arm of the spectrograph uses deep-depletion CCDs optimized for operation near 1.0 μm. Both channels use a white-pupil collimator design to maximize grating efficiency and to limit the size of the camera optics.
We review the spectrograph design and present commissioning results obtained with both the visible and infrared arms. The spectrograph features an optical arm for the wavelength range 0.5 - 1.0 μm and an infrared arm for the range 1.0 - 2.5 μm. Therefore, an on-chip IR spectrometer is highly desired. from the UV to the IR including the K-band. mand for developing a portable, cost-effective IR spectroscopy system is continuously growing. The wavelength range is 0.3 to 2.5 m i.e. INTRODUCTION X-shooter is a single target, wide-band medium resolution spectrograph for the VLT. of silicon immersion 6 DISTRIBUTION OF THIS DOCUMENT IS UNLIMIED. The Institute for Astronomy has developed and recently installed a high-resolution cross-dispersed echelle spectrograph for use at one of the coudé foci of the AEOS 3.7-meter telescope, operated by the Air Force Space Command atop Mt. Keywords: X-shooter, spectrograph, infrared, cryogenic, design at operating temperature, ASTRON extreme light-weighting, polished aluminium mirror 1. In time the demand for IR spectroscopy on GMT will be addressed by a followup generation of Adaptive Optics (AO) instruments, which includes an R 50, 000 spectrometer operating at 1.12 5. Design of a mid-IR immersion echelle grating spectrograph for remote sensing Norman.