Hα Slit-Jaw Monitor System of the Solar Spectrograph of the Yunnan Observatory and Its Application

An Hα slit-jaw monitor system has recently been attached to the solar multi-waveband spectrograph of the Yunnan Observatory.A simple reflector-refractor configuration and a 3.2cm daystar filter at 0.6Å,i.e.a filter of the interferometer type,are adopted.The observed results show that the performance of the monitor is stable.Several sets of the Ha photographs and multiwaveband spectrograms are also presented in this paper.