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GIRAFFE Pipeline Reference Manual |
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Flux calibration
Detailed DescriptionTBD Function Documentation
Compute the response and efficiency curves.
The function computes the wavelength dependent instrument response and efficiency curves from the observed and rebinned spectrum of a flux standard, and stores them in the result object result. The response is defined as the function by which the incident spectrum at the top of the atmosphere has to be multiplied, in order to obtain the spectrum recorded with the detector. The efficiency is the ratio of detected photons (corrected for the atmospheric extinction) over the number of incident photons. The function expects as input an observation of a single flux standard, i.e. no other target is visible with in the Argus field of view, or, in case of an IFU observation, all buttons are either used to observe the target, or point to blank sky. As additional constraint, the individual fiber spectra of the flux standard have to be rebinned to a common wavelength grid, i.e. the wavelength range for all fibers has to be the same. The total observed flux of the flux standard is computed by adding up the spectra of all fibers. No background subtraction, and, in the case of Argus, no source detection is performed. The response and the efficiency curves are computed for the wavelength range given by the rebinned flux standard observation. Definition at line 1511 of file gifxcalibration.c. References gi_warning(), giraffe_image_get(), giraffe_image_get_properties(), giraffe_image_new(), giraffe_image_set(), giraffe_image_set_properties(), giraffe_table_get(), giraffe_table_new(), giraffe_table_set(), and giraffe_table_set_properties().
Add flux calibration parameters to a parameter list.
The function updates the list of parameters parameters with the configuration parameters of the flux calibration task. Definition at line 1877 of file gifxcalibration.c.
Destroy a flux calibration setup structure.
The function deallocates the memory used by the setup structure self, and the setup structure itself. Definition at line 1851 of file gifxcalibration.c. |