CORRELATION BETWEEN ASTRONOMICAL SEEING AND LOCAL FLUCTUATION OF THE ATMOSPHERE

天文观测与当地大气波动之间的相关性

• 批准号: 07640361
• 负责人: TAKATO Naruhisa
• 金额: $ 1.47万
• 依托单位: NATIONAL ASTRONOMICAL OBSERVATORY OF JAPAN
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07640361/
• 关键词: ASTRONOMICAL SEEING; TURBULENCE; ATMOSPHERIC OPTICS; 光波伝播; フリードパラメタ

We have developed high-speed temperature fluctuation measurements system (CT2 monitor) and optical seeing monitor. Our CT2 monitor can measure down to 2x10-7 K2m-2/3, which is about 3 times sensitive than we have used before. Optical seeing monitor consists of two 10 cm diameter telescope mounted on the same mount separated by 50 cm, and measure the correlation of dancing between the two image spots generated by each telescopes. Simultaneous observations with adaptive optics system on Infrared simulator telescope has been made and investigated the correlation between seeing inside and outside of the dome.We also investigated the efficiency of image selection technique using high-speed shutter controlled by wave-front sensor or seeing monitor. We can obtain moderately improved images with acceptable loss-time, for example FWHM=0.54 arcsec image can be obtained using 20% of observing time when seeing size is 0.62 arcsec.

我们研制了高速温度波动测量系统（CT 2监测仪）和光学视宁度监测仪。我们的CT 2监测仪可以测量低至2x 10 -7 K2 m-2/3，这是我们以前使用的灵敏度的3倍。光学视宁度监视器由两个直径为10 cm的望远镜组成，它们安装在同一个安装架上，相距50 cm，并测量每个望远镜产生的两个像点之间的跳动相关性。利用自适应光学系统在红外模拟望远镜上进行了同步观测，研究了圆顶内外视宁度的相关性，并研究了利用波前传感器控制的高速快门或视宁度监视器进行图像选择的效率。我们可以在可接受的损失时间内获得适度改善的图像，例如，当视尺寸为0.62弧秒时，可以使用20%的观察时间获得FWHM=0.54弧秒的图像。

项目成果

H.Takami et al.: ""SUBARU adaptive optics"" OSA technical Digest. 13. 25-27 (1996)

H.Takami 等人：“SUBARU 自适应光学”OSA 技术文摘。

H.Takami et al.: ""SUBARU adaptive optics program"" ESO conference and Workshop proceedings. 54. 43-48 (1996)

H.Takami 等人：“SUBARU 自适应光学计划”ESO 会议和研讨会论文集。

H.Takami et al.: "SUBARU adaptive optics program" ESO conference and workshop proceedys. 54. 43-48 (1996)

H.Takami 等人：“SUBARU 自适应光学计划”ESO 会议和研讨会论文集。

M.Iye et al.: ""Subaru instrumentation plan and optical instruments"" Proc.SPIE. 2871. 1054-1063 (1997)

M.Iye 等人：“斯巴鲁仪器计划和光学仪器”Proc.SPIE。

N.Takato: "Image Selection using high-speed shutter" Proc.SPIE “Optical Telescopes of Today and Tomorrow". 2871. 722-725 (1997)

N.Takato：“使用高速快门进行图像选择”Proc.SPIE“今天和明天的光学望远镜”2871. 722-725 (1997)。