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 />
Beyond ISR<br />
ISR is also necessary before you can combine multiple images:<br />
20x →<br />
Other effects will be treated later:<br />
• point-spread function (PSF): the response of the optical<br />
system <strong>to</strong> a point source is not a point<br />
• pho<strong>to</strong>metric calibration: comparing with standard stars <strong>to</strong><br />
calibrate sources in terms of Wm −2 s −1 (in the relevant<br />
bandpass)
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