ASTROMETRY WITH A PDS MICRODENSITOMETER USING CUBIC-SPLINES

被引：0

作者：

PLATAIS, I ^{[1
]}

机构：

[1] ACAD SCI LASSR, RADIOASTROPHYS OBSERV, RIGA 226524, LATVIA, USSR

来源：

ASTRONOMY & ASTROPHYSICS | 1991年 / 241卷 / 02期

关键词：

PHOTOGRAPHIC ASTROMETRY; DIGITAL IMAGE CENTERING; CUBIC SPLINES;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

For digital image centering, the cubic spline technique has been applied to marginal distributions of PDS measured density arrays. This centering algorithm provides accuracies similar to that of a symmetric Gaussian. For faint stars, spline fitting is more accurate and stable than the Gaussian one. Spline fitting is also recommended for nonstellar object (comets, galaxies, etc.) astrometry. The optimal use of a PDS microdensitometer is discussed as well.

引用

页码：656 / 662

页数：7

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