arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1006.3528astro-ph.IM
收藏

现场测试项目的第一批结果。2007 - 2009年Shatdzhatmaz

First results of site testing program at Mt. Shatdzhatmaz in 2007 - 2009

V. Kornilov, N. Shatsky, O. Voziakova, B. Safonov, S. Potanin, M. Kornilov

摘要:

我们目前的第一个结果的现场测试进行的山~北高加索的Shatdzhatmaz,斯滕伯格天文研究所新的2.5米望远镜将安装在那里。介绍了一种自动现场监测仪的仪器和功能,以及测量基本天体气候和天气参数的方法。根据2006 - 2009年的数据得出的晴朗夜空时间为每年1340小时。光学湍流高度分布是影响光学望远镜性能的最重要的特性,本文着重讨论了光学湍流高度分布的测量。从2007年11月到2009年10月,使用MASS/DIMM组合仪器收集了超过85,000个湍流廓线。本文导出了峰顶湍流大气的统计特性,确定了大气视宁度$β_0 = 0.93$ ~arcsec和自由大气视宁度$β_{free} = 0.51$ ~arcsec的中值。连同等晕角$θ_0 = 2.07$ ~arcsec和时间常数$τ_0 = 2.58 \mbox{ ms}$的估计,这些是俄罗斯站点获得的第一个代表性结果,这些结果对于发展自适应光学等现代天文观测技术是必要的。

英文摘要:

We present the first results of the site testing performed at Mt.~Shatdzhatmaz at Northern Caucasus, where the new Sternberg astronomical institute 2.5-m telescope will be installed. An automatic site monitor instrumentation and functionality are described together with the methods of measurement of the basic astroclimate and weather parameters. The clear night sky time derived on the basis of 2006 -- 2009 data amounts to 1340 hours per year. Principle attention is given to the measurement of the optical turbulence altitude distribution which is the most important characteristic affecting optical telescopes performance. For the period from November 2007 to October 2009 more than 85\,000 turbulence profiles were collected using the combined MASS/DIMM instrument. The statistical properties of turbulent atmosphere above the summit are derived and the median values for seeing $β_0 = 0.93$~arcsec and free-atmosphere seeing $β_{free} = 0.51$~arcsec are determined. Together with the estimations of isoplanatic angle $θ_0 = 2.07$~arcsec and time constant $τ_0 = 2.58 \mbox{ ms}$, these are the first representative results obtained for Russian sites which are necessary for development of modern astronomical observation techniques like adaptive optics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑