Recipe muse_ampl: Determine the instrumental throughput from exposures taken with the pico-amplifier / photo diode readings.

Data Structures

struct  muse_ampl_params_s
 Structure to hold the parameters of the muse_ampl recipe. More...

Typedefs

typedef struct muse_ampl_params_s muse_ampl_params_t
 Structure to hold the parameters of the muse_ampl recipe.

Detailed Description

Author:
Peter Weilbacher

This recipe combines several separate amplifier images (flat-fields with special FITS headers containing pico amplifier measurements) into one master image file and computes the instrumental throughput per IFU (and slice).

Processing trims the raw data and records the overscan statistics, subtracts the bias (taking account of the overscan, if overscan is not "none"), and optionally, the dark from each raw input image, converts them from adu to count, scales them according to their exposure time, and combines them using input parameters.

To compute the throughput the image is converted into a pixel table, the flux is then integrated over the given filter band, and the ratio of the expected flux (FITS header INS.AMPL2.CURR) to measured flux is taken, in the same units. If a geometry table was given as input, the relative area of the IFUs is taken into account when computing the flux per unit area. The resulting ratio is the instrument efficiency (throughput) and saved as QC parameters for the whole input image and per slice in the output pixel table.


Typedef Documentation

Structure to hold the parameters of the muse_ampl recipe.

This structure contains the parameters for the recipe that may be set on the command line, in the configuration, or through the environment.


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