The astropy.wcs.WCS.WCS is a class in the Astropy package that provides a powerful and flexible tool for working with World Coordinate System (WCS) transformations in Python. A WCS defines the mapping between pixel coordinates of an image and their corresponding physical coordinates in the sky. The WCS.WCS class allows users to read, manipulate, and apply WCS transformations to astronomical data, enabling astronomers to accurately analyze and interpret celestial images. The class provides various methods and attributes to access and modify the WCS information, such as coordinate conversion, pixel-to-world and world-to-pixel transformations, and accessing the WCS metadata. It is widely used in the astronomical community to facilitate precise and accurate coordinate-based analysis of astronomical data.
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