CAJ | 학술논문

本文分析研究大气色散对4m望远镜成像系统分辨率的影响及校正方法。首先计算分析了大气色散对其成像分辨力的影响，计算结果表明，天顶角大于15°时，大气色散开始影响系统成像分辨力，天顶角大于45°时，对系统成像分辨力有着较为严重的影响，需要设置大气色散校正器来进行消除。本文列举了3种大气色散校正器的实现形式，分别比较了它们的优缺点，最后选择了胶合棱镜旋转补偿的形式来消除大气色散对4m望远镜高分辨力成像系统的影响。基于4 m望远镜高分辨力成像系统的特点，将大气色散校正器放置于成像元件前的平行光路中，并利用光学设计软件对不同天顶角与大气色散校正器的旋转角度进行了仿真分析，该大气色散校正器的最大楔角为9.65°，旋转精度为±0.1°，对系统分辨力影响为1／1000。分析结果表明，旋转精度完全能够满足系统成像分辨力的要求，证明本文对大气色散的影响分析和大气色散校正器的设计是有效的。
본문분석연구대기색산대4m망원경성상계통분변솔적영향급교정방법。수선계산분석료대기색산대기성상분변력적영향，계산결과표명，천정각대우15°시，대기색산개시영향계통성상분변력，천정각대우45°시，대계통성상분변력유착교위엄중적영향，수요설치대기색산교정기래진행소제。본문열거료3충대기색산교정기적실현형식，분별비교료타문적우결점，최후선택료효합릉경선전보상적형식래소제대기색산대4m망원경고분변력성상계통적영향。기우4 m망원경고분변력성상계통적특점，장대기색산교정기방치우성상원건전적평행광로중，병이용광학설계연건대불동천정각여대기색산교정기적선전각도진행료방진분석，해대기색산교정기적최대설각위9.65°，선전정도위±0.1°，대계통분변력영향위1／1000。분석결과표명，선전정도완전능구만족계통성상분변력적요구，증명본문대대기색산적영향분석화대기색산교정기적설계시유효적。
This paper counts and analyzes the effect of atmospheric dispersion on image resolution of 4 m opti-cal telescope system.It is introduced that atmospheric dispersion will influence image resolution when the zen-ith angle is larger than 15°.With the zenith angle increasing, especially up to 45°, the image quality would be degraded greatly, so it is quite necessary that the atmospheric dispersion corrector(ADC) is applied to compensate atmospheric dispersion.By comparing the advantages and drawbacks of three modes for ADC:tilt mode, move mode and rotate mode, the glue prism pairs is used to eliminate the influence of atmospheric dis-persion for 4 m telescope system, which would rotate with each other when the zenith angle changes.In 4 m telescope optical system, the ADC is positioned in front of imaging elements of collimated optical layout.Then we analyze the relation between zenith angle and rotating angle of ADC.The largest wedge angle of the ADC is 9.65°, and the rotating accuracy is ±0.1°, having an effect of 1/1 000 on resolution.So it is obviously con-cluded that the results satisfied the request of image resolution, and it is an effective way for the analysis of at-mospheric dispersion and the application of ADC.