Application of MGC method to centering saturated and stretched images†
Abstract
Sometimes saturated and stretched star images with bad data in their central parts may result in astronomical CCD observations. Considering the special characteristics of the saturated and stretched star images, a method known as MGC(Mean-Geometric-Centering) is put forward for determining the centers of these images. The basic principles and processing pipelines of MGC are introduced, and several noteworthy items in the realization of MGC are discussed. Results of applying MGC to simulated and real data are also presented.
- Publication:
-
A Giant Step: from Milli- to Micro-arcsecond Astrometry
- Pub Date:
- July 2008
- DOI:
- 10.1017/S1743921308018772
- Bibcode:
- 2008IAUS..248..110M
- Keywords:
-
- techniques: image processing;
- methods: data analysis;
- astrometry