CEDAR: Development of a Sky Light Extinction Monitor

CEDAR：天光消光监测器的开发

• 批准号: 9101629
• 负责人: Alan Peterson
• 金额: $ 12.52万
• 依托单位: Whitworth University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-08-15 至 1994-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9101629&HistoricalAwards=false
• 关键词: CEDAR; Development; Sky; Light; Extinction

With support from this grant the PI will construct and deploy, at CEDAR and other field sites, a multiwavelength, computer controlled and pointed, stellar photometer to monitor the condition of the sky during airglow observations. Data will be obtained on atmospheric extinction at eight wavelengths including a water vapor absorption band. These data will permit the correction of airglow photometric data for absorption in the earth's troposphere. In addition, the background sky brightness will be monitored at each wavelength. Two wavelengths will be set at emission lines due to mercury and sodium which are emitted strongly by outside lights at night. Clouds illuminated by such lighting produces a strong source of sky pollution which reduces the quality of night sky observations. Results from this instrument will be invaluable to other observers who must operate their instrument in an unmanned automatic mode. With data corrected for extinction better agreement between observations and model predictions should result; likewise agreement between various observers' results should improve. Commercial devices will be used as far as possible to reduce development time. The resulting data set will be provided to campaign observers and will be deposited in the CEDAR data bank.

在这笔赠款的支持下，PI 将在 CEDAR 和其他现场站点建造和部署一台多波长、计算机控制和指向的恒星光度计，以在气辉观测期间监测天空状况。 将获得八个波长（包括水蒸气吸收带）的大气消光数据。 这些数据将允许校正地球对流层吸收的气辉光度数据。 此外，还将监测每个波长的背景天空亮度。 由于汞和钠在夜间会被外界光线强烈发射，因此将在发射线处设置两个波长。 这种照明照射的云层会产生强烈的天空污染源，从而降低夜空观测的质量。 该仪器的结果对于必须在无人自动模式下操作仪器的其他观察者来说非常宝贵。 通过对灭绝数据进行校正，观测结果和模型预测之间应该会产生更好的一致性；同样，不同观察者的结果之间的一致性也应该得到改善。 将尽可能使用商业设备以减少开发时间。 由此产生的数据集将提供给竞选观察员，并将存入 CEDAR 数据库。