项目名称: 丽江2.4米望远镜高反射率反射膜的研究
项目编号: No.11473068
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 天文学、地球科学
项目作者: 伦宝利
作者单位: 中国科学院云南天文台
项目金额: 94万元
中文摘要: 丽江2.4米望远镜的反射镜采用铝加单层介质保护膜作为反射膜系,来自观测目标的光线经过望远镜后能量损失较大,影响望远镜对暗弱目标的观测效果。本项目利用现有的ZZ3200镀膜机及相关设备,研究在丽江2.4米望远镜上制备可见及近红外波段拥有高反射率的铝加多层介质反射膜,使镜面平均反射率达到93%,并尝试使用热蒸发的方法研制适合天文望远镜的更高的反射率银反射膜。为丽江2.4米望远镜的反射镜镀制更高反射率的反射膜,可以显著增加望远镜光学系统的效率,提高望远镜极限星等,增加望远镜对暗弱目标的探测能力。也可为我国其他天文光学望远镜反射镜镀膜提供借鉴,同时为中国下一代大口径天文光学望远镜的研制提供宝贵的技术经验。
中文关键词: 天文望远镜;主镜;薄膜;反射率
英文摘要: LiJiang 2.4-meter telescopes use aluminum and single protective film as a reflective film, a lot of energy of light which from The target of interest has loss, this have bad influence to the research when the telescope observe a faint target. This project use film plating machine ZZ3200 and related equipment, research on aluminum coating with high reflectivity film, make The average reflectivity is no less 93%, and try to study the silver reflective film by using thermally evaporated equipment. The reflective film will make the 2.4-meter telescope more efficiently, improve the magnitude limit of the Lijiang 2.4-meter telescope, increase the power of telescope when the telescope observe a faint target.It can also provide reference for mirror coating other astronomical optical telescope in our country, providing valuable experience at the same time to develop the next generation of large aperture optical telescope in China.
英文关键词: Astronomical telescope;Primary Mirror;Thin Film;Reflectivity