CCD Data Reduction Guide
This version of the CCD guide is out-of-date. Please go
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CCD Data Reduction Guide
2. Understanding astronomical images
2.1 An artificial, but realistic, image
2.2 Non-uniform sensitivity in astronomical detectors
2.3 Calibration overview
2.4 Image combination
2.5 Overscan
2.6 Calibration choices to make
2.7 Reading images
3. Overscan and bias images
3.1 Calibrating bias images
3.2 Combine bias images to make master bias
4. Dark current and dark frames
4.1 Dark current: the ideal case
4.2 Real dark current: noise and other artifacts
4.3 Handling overscan and bias for dark frames
4.4 Calibrate dark images
4.5 Combine calibrated dark images for use in later reduction steps
5. Flat fielding
5.1 Calibrating flat frames
5.2 Combining flat frames
6. Calibrating science images
7. Finding and dealing with bad pixels
7.1 Identifying hot pixels
7.2 Identifying bad pixels with ccdmask
7.3 Removing cosmic rays
7.4 Incorporating masks in science images
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