超光谱成像仪狭缝热光谱特性的分析

介绍了在狭缝超光谱成像仪中的重要作用。推导出在温度水平变化时,狭缝宽度尺寸的变化对超光谱成像仪光谱带宽与信噪比的影响,得到了超光谱成像仪狭缝的热光谱特性。比较了两类常见狭缝的热光谱特性,得出热特征尺寸与其导热率乘积越小的狭缝热光谱特性也越好的结论。     

使用小型棱镜摄谱半定量分析光谱的简便方法

介绍了借助CCD工业摄像机,使用小型棱镜摄谱仪拍摄光谱及在微机计算机上制作标准铁谱和处理光谱的方法,这种方法的采用使我们不必每次都拍摄铁谱,大在地简化了样本的半定量分析。     

神经网络在棱镜摄谱仪定量分析光谱中的应用

给出了采用BP神经网络拟合标准光源在棱镜摄谱仪的谱平面位置和相应波长的非线性函数,省去了和标准铁谱比对测量未知谱线波长,简化了光谱的定量分析,提高了仪器的自动化和智能化水平.     

使用小型棱镜摄谱仪半定量分析光谱的简便方法

摘要介绍了借助CCD工业摄象机，使用小型棱镜摄谱仪拍摄光谱及在微型计算机上制作标准铁谱和处理光谱的方法.这种方法的采用使我们不必每次都拍摄铁 谱，大大地简化了样本的半定量分析.     

The effects of spectrograph slit modes on the accuracy of stellar radial velocity measurement and atmospheric parameter estimation

Spectrograph slit is conventionally used to enhance the spectral resolution and manage how much light can be allowed to enter spectrograph.The narrow slit provides a higher resolution but sacrifices efficiency of spectrograph and results in a low signal to noise ratio(S/N) spectra product.We take GuoShouJing telescope as an example and carry out a series of experiments to study how its 2/3 slit mode affects the precision of stellar radial velocity measurement and atmosphere parameters estimate.By transforming the resolution and adding a Gaussian White Noise to the extremely high quality spectra from the Sloan Digital Sky Survey,we generate synthetic stellar spectra of various brightness with different S/Ns.Comparing the measurements on these noise added spectra with the original high quality ones,we summarize the influences of the 2/3 slit mode on the measurement accuracy of stellar radial velocity and atmospheric parameters.     

Effects of composition on results from spectral analysis of alloys

The rate of growth of the oxide layer and the rate of erosion of the same indicate that a major part is played by changes in structure and heat resistance consequent on change in composition. Some aspects of the electrode processes in various gases are discussed.     

Coding the results of semiquantitative spectral analysis and estimation of their accuracy

A logarithmic digital code for expressing the results of semiquantitative spectral analysis is proposed. Concentrations expressed in this code are independent of the scale factor employed. Problems involved in estimating the accuracy attained in using the proposed code are discussed.     

Mathematical model of calibration curve and results of spectral analysis

Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 51, No. 5, pp. 805–810, November, 1989.     

A high spectral resolution spectrograph with fiber input for the Big Azimuthal Telescope of SAO RAS. Improvement of the spectral module

The paper presents a critical analysis and modernization of separate elements of the optical layout of a high-resolution spectrograph with fiber input for the Big Azimuthal Telescope of the Special Astrophysical Observatory. The modernization is directed mainly at enhancing the light efficiency and making it possible to produce the spectrograph using domestic manufacturers. Renovated versions of the cross-dispersion grism, the projection camera, and the overall characteristics of the system are presented. The resulting efficiency of the whole instrument is given.