论文标题
近红外成像器光谱仪和偏光计仪器（NISP）的光学方面
Optical aspects of Near-Infrared Imager Spectrometer and Polarimeter instrument (NISP)
论文作者
论文摘要
作为PRL即将推出的2.5 m望远镜的近红外仪器，NISP在PRL上被设计为多面仪器。光学，机械和电子子系统正在PRL内部设计和开发。它将由波长y，j，h，ks（即0.8-2.5微米）中的成像，光谱和成像极化模式组成。该检测器是Teledyne的2K x 2k H2RG（MCT）阵列检测器，在成像模式下将提供10'x 10'的大型FOV。使用grisms将实现具有r〜3000 r 〜3000的光谱模式。光谱学将单阶可用，并应计划用于同时光谱的交叉分散模式。该仪器可以使用楔形双Wollaston（Wedowo）Prisms启用多波长成像极光来使单个Shot Stokes参数（I，Q，U）同时进行线性极化，从而提高了极化测量的效率并减少了观察时间。
As a Near-IR instrument to PRL's upcoming 2.5 m telescope, NISP is designed indigeniously at PRL to serve as a multifaceted instrument. Optical, Mechanical and Electronics subsystems are being designed and developed in-house at PRL. It will consist of imaging, spectroscopy and imaging-polarimetry mode in the wavelength bands Y, J, H, Ks i.e. 0.8 - 2.5 micron. The detector is an 2K x 2K H2RG (MCT) array detector from Teledyne, which will give a large FOV of 10' x 10' in the imaging mode. Spectroscopic modes with resolving power of R ~ 3000, will be achieved using grisms. Spectroscopy will be available in single order and a cross-dispersed mode shall be planned for simultaneous spectra. The instrument enables multi-wavelength imaging-polarimetry using Wedged-Double Wollaston (WeDoWo) prisms to get single shot Stokes parameters (I, Q, U) for linear polarisation simultaneously, thus increasing the efficiency of polarisation measurements and reducing observation time.
