Calibration overrides

ORAC-DR gives the user the ability to override the default calibration information as returned by the pipeline through use of the -calib commandline option. By adding methods in ORAC::Calib or in instrument-specific subclasses, it is possible to add various override methods. As an example of this, see the profile, profilename, profileindex, and profilenoupdate methods in ORAC::Calib::CGS4. For further information on adding override methods see §, and for information on using override methods when reducing data with ORAC-DR see SUN/230.

A number of general overrides are available.

• baseshift - Use the given comma separated doublet (i.e. ``0,0'') as the frame's base position.

• bias - Use the given bias frame.

• dark - Use the given dark frame.

• flat - Use the given flat frame.

• mask - Use the given mask. Usually used for bad pixel masks.

• readnoise - Use the given value for the detector readnoise.

• rotation - Use the given frame as a rotation matrix.

• sky - Use the given sky frame.

• standard - Use the given standard star frame.