A Low-rank Approach to Image Defringing. (15th November 2021)

• Record Type: Journal Article
• Authors: Prunet, Simon
• Is Part Of: Publications of the Astronomical Society of the Pacific. Volume 133:Number 1029(2021)
• Publication Date: 2021-11-15
• Subjects: Algorithms -- Astronomy data reduction -- CCD photometry; Astronomy -- Periodicals; Astronomy; Periodicals; Periodicals; 520.5
• DOI: 10.1088/1538-3873/ac3408
• Languages: English
• ISSNs: 0004-6280

Abstract

Abstract: In this work, we revisit the problem of interference fringe patterns in CCD chips occurring in near-infrared bands due to multiple light reflections within the chip. We briefly discuss the traditional approaches that were developed to remove these patterns from science images, and mention their limitations. We then introduce a new method to globally estimate the fringe patterns in a collection of science images without additional external data, allowing for some variation of the patterns between images. We demonstrate this new method on near-infrared images taken by the CFHT wide-field imager Megacam.