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The science dealing with objects and phenomena located beyond Earth. In particular, this applies to observations and data. At its core, astronomy is the physically informed cataloging and classifying of the contents of the universe in order to better understand what is out there.
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Aligning images of starfields
IRAF (Image Reduction Analysis Facility) is a free program that can help you with aligning your images of stars and many more astronomy related tasks for image analysis. You can download IRAF here. … Most CCD astronomy cameras will output images in this format. Anyway once you have IRAF installed you can use the imalign function. …