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Post-pre subtraction
Raw INGRID data comprise a pre-exposure image and a post-exposure
integration. The pipeline subtracts the former from the latter to
give the measured signal.
[INGRID/_DIFFERENCE_PRE_POST_]
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ORAC-DR -- imaging data reduction
Starlink User Note 232
Malcolm J. Currie
Brad Cavanagh
Joint Astronomy Centre, Hilo, Hawaii
2004 June
E-mail:ussc@star.rl.ac.uk
Copyright © 2004 Particle Physics and Astronomy Research Council