Astrometrica与MaxIm DL在天体测量中的应用与技术研究

为探究Astrometrica和MaxIm DL两个软件在天体测量中应用与处理的差异,从软件的总体情况、CCD图像的读写与变换、平场校正、参数设置、归算与堆叠等方面进行了详细的比较和研究.以中国科学院云南天文台1 m光学望远镜拍摄的M35星团的两组观测资料为例,探究了Astrometrica均值、中值和MaxIm DL...

Applications and Technology Research for Astrometrica and MaxIm DL in Astrometry

In order to explore the difference of Astrometrica and MaxIm DL for application and CCD image processing in Astrometry,overall introduction,loading,saving and transforming CCD images,flat calibration,data reduction and stacking of the two suites of software are detailedly compared and technically researched in this paper.Taking the example of two sets of observations of M35 Cluster photographed by the 1 m optical telescope of Yunnan Observatories of Chinese Academy of Sciences,this paper explores the output results of the 6 stacking methods including Mean,Median of Astrometrica and Mean,Median,Sigma Clip and SD Mask of MaxIm DL.Referring to Gaia DR2 Catalog,this paper reduces the 6 output results above and compares their precision of the star images.In this paper,we find anomalies in the position accuracy of the output images using Astrometrica′s Median stacking.At the end of this paper,we put forward some methods of using the two suites software in combination for astrometry and survey.