Standard Star Photometry at Three Declinations Around the Sky

Arlo Landolt博士的天文观测研究项目的目标是增强、开发和发布各种科学目的所需的微弱标准恒星序列。在天球的映衬下，出现了各种各样的现象，观测者需要了解这些现象的强度和颜色信息。因此，长期需要精确的光度标准恒星，即那些在各种光学波长下具有已知强度和颜色的恒星。使用这样的标准恒星，可以将不同研究人员对不同天体现象的亮度和颜色测量结果进行组合和相互比较。此外，兰多尔特博士的标准恒星工作将是解决新一代巨型望远镜面临的校准问题的重要一步。＊＊＊

AST-0097895LandoltThe goal of Dr. Arlo Landolt's astronomical observational research project is to enhance, develop, and publish faint standard star sequences which are needed for a variety of scientific purposes. There occur projected against the celestial sphere a wide range of phenomena for which observers need intensity and color information. Therefore, there is a long-term need for accurate photometric standard stars, those with known intensities and colors at a variety of optical wavelengths. Use of such standard stars permits the combination and inter-comparison of the brightness and color measurements of different celestial phenomena made by different investigators. Furthermore, Dr. Landolt's standard star work will be an important step toward solving the calibration problems facing the new generation of giant telescopes. ***