CORRELATION BETWEEN ASTRONOMICAL SEEING AND LOCAL FLUCTUATION OF THE ATMOSPHERE

研制了高速温度波动测量系统（CT2监测仪）和光学观测监测仪。我们的CT2监视器可以测量到2x10-7 K2m-2/3，这是我们以前使用的灵敏度的3倍左右。光学观测监测器由两个直径为10厘米的望远镜组成，它们安装在相距50厘米的同一底座上，测量每个望远镜产生的两个像斑之间的舞蹈相关性。利用红外模拟望远镜上的自适应光学系统进行了同步观测，研究了穹顶内外观测的相关性。我们还研究了由波前传感器或视觉监视器控制的高速快门图像选择技术的效率。我们可以在可接受的损失时间下获得适度改进的图像，例如，当看到尺寸为0.62 arcsec时，使用20%的观测时间可以获得FWHM=0.54 arcsec的图像。

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.