Introduction to Image Reduction
Introduction to Image Reduction
Introduction to Image Reduction
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Motivation & background Instrumental Signature Removal Combining multiple images Pho<strong>to</strong>metric calibration<br />
Combining multiple images: overview<br />
Conceptually, simply “coadd” multiple images of the same field <strong>to</strong> obtain<br />
a higher S/N “stacked image.”<br />
20x →<br />
This is a form of lossy data compression with (usually) high compression<br />
and low loss.<br />
There may be better ways <strong>to</strong> analyze your dataset (eg comeasurement,<br />
model fitting), but you usually want a stack at least for reference<br />
purposes.
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