厚片CCD标准谱线证认及光栅转角测定

自1987年以来,云台库特摄谱仪改装使用了CCD相机,将可测波段扩展到红外。本文经实测证认了适用于扩展后的7000—11700埃的Fe-Ar比较光源的标准光谱谱线表。并精确测定了仪器改装后的光栅转角计算公式,还讨论了仪器综合效率、光栅定位精度、滤光片的使用等问题。

Identifications of the Standard Spectral Lines and the Determination of the Grating Angualar Formula

Up to now two CCD cameras are employed with the Coude system of the 1m telescope at the Yunnan Observatory. One of them is the No.1 CCD system placed at the il900 focus and another is the newly developed thick CCD spectral system. These CCD systems extend the observable range of the telescope to the infrared wave band. In this paper, the identifications of the standard spectra from 7000 A to 11700 A produced by a comparison light source, a Fe-Ar hollow-cathode lamp, are given, A grating angualar formula is determined with the thick CCD system. In addition, some problems, such as the synthetical instrument efficiency, the precision of the grating location and the use of spectra! filters, are also discussed.