The site selection for the Iranian National Observatory (INO) was concluded in 2007. As a result of a 7-year campaign, Mount Gargash was identified to host the INO observing facilities. To measure the atmospheric seeing, an Automated Differential Image Motion Monitoring (automatic DIMM) system has been installed few 100 meters to the mainpeak. Together with a weather station, this automatic DIMM system enabled us to continuously gather data on the main atmospheric features of the site namely seeing, temperature, wind speed and direction, and relative humidity. In this study, we present the analysis of three years of automatic DIMM seeing data of this INO site. The measurements indicate that the site benefits from a low atmospheric seeing with median 0.7 arcsec and 1st and 3rd quartile being equal to 0.4 and 0.8 arcsec, respectively. We study the effect of the target position on the seeing measurements in order to optimize the future target selection criteria. Combining the simultaneous seeing and weather data, we investigate the long-term pattern of the variations in seeing and the meteorological parameters. This helps us understand the nature of variations and how they are influenced by general meteorological conditions. These analyses would improve observation strategies at this site in long and short-term.

中文翻译：

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伊朗国家天文台项目：观察加尔加什山的测量结果

伊朗国家天文台 (INO) 的选址于 2007 年结束。经过 7 年的活动，加尔加什山被确定为 INO 观测设施的所在地。为了测量大气观测，在距主峰仅 100 米处安装了自动差分图像运动监测（自动 DIMM）系统。与气象站一起，这个自动 DIMM 系统使我们能够持续收集有关站点主要大气特征的数据，即视野、温度、风速和风向以及相对湿度。在这项研究中，我们对这个 INO 站点的三年自动 DIMM 观察数据进行了分析。测量结果表明该站点受益于低大气视野，中值 0.7 弧秒，第一和第三四分位数分别等于 0.4 和 0.8 弧秒。我们研究目标位置对视觉测量的影响，以优化未来的目标选择标准。结合同步观测数据和天气数据，我们研究了观测和气象参数变化的长期模式。这有助于我们了解变化的性质以及它们如何受到一般气象条件的影响。这些分析将改善该站点的长期和短期观测策略。这有助于我们了解变化的性质以及它们如何受到一般气象条件的影响。这些分析将改善该站点的长期和短期观测策略。这有助于我们了解变化的性质以及它们如何受到一般气象条件的影响。这些分析将改善该站点的长期和短期观测策略。