DCMT活动光栅控制系统

The Control System for DCMT'S Active Slits

ＤＣＭＴ活动光栅的控制系统是主测微器的主要部分，本控制系统操作灵活，它既能联机工作又能脱机工作，并具有自动报警和自动复位功能。主测微器承担测定天体和５个自准直像的位置，要比传统的活动光栅复杂得多．本设计的独特之处在于用分区、分时并配以光栏控制诸方法确定全部像的位置。保证了所有的观测在同一个系统之内．经一年来的实际观测证明，本系统精度优于０”．０３，达到了同类别微器的先进水平．

he control system of active slits micrometer is a major part on the DCMT. It is convenient to operate it, and it can work connecting faith computer or off-connecting with computer. The system has both the functions of automatic alarm and automatic reset. It is more complicated than the traditional active slits micrometer because the main micrometer is required to measure the positions of stars and the live auto-collimation images. A method with divided working regions for observing positions is used here, so it can keep all the measurements in one uniform system. The repeatbility of this system is better than 0'. 03 according to the observations for the period of more that one year.