IIINSTRUMENT Pipeline Reference Manual
6.2.2
|
Functions | |
double * | isaac_get_disprel_estimate (const char *filename, cpl_size poly_deg) |
Estimate the instrument wavelength range. More... | |
double * | isaac_physical_model (double lambda_c, const char *objective, const char *resolution, int nbpix) |
ISAAC physical model. More... | |
double* isaac_get_disprel_estimate | ( | const char * | filename, |
cpl_size | poly_deg | ||
) |
Estimate the instrument wavelength range.
filename | input file name |
poly_deg | polynomial degree |
From a physical model of the instrument, find out the wavelength range associated to a given instrument configuration. The returned coefficients are such as wave = c[0] + c[1] * pix + ... + c[poly_deg] * pix^poly_deg
Instrument configuration informations are fetched from the FITS header.
Definition at line 99 of file isaac_physicalmodel.c.
References isaac_pfits_get_naxis1(), isaac_pfits_get_objective(), isaac_pfits_get_resolution(), isaac_pfits_get_wlen(), and isaac_physical_model().
double* isaac_physical_model | ( | double | lambda_c, |
const char * | objective, | ||
const char * | resolution, | ||
int | nbpix | ||
) |
ISAAC physical model.
lambda_c | central wavelength |
objective | slit used |
resolution | resolution (medium or low) |
nbpix | number of pixels to calibrate |
This module determines the dispersion relation of ISAAC for the different configurations of objectives, gratings, detectors, and central wavelengths.
Assumed Optical configuration:
Focal lens of objectives for short- and long-wavelength objective (at 77 K): S1 = f/1.75, S2 = f/3.25, L1 = f/1.56, L2 = f/4.77, L3 = f/9.98 Pupil size: 100 mm Pixel size: 18.5 microns (SW), 27 microns (LW) Gratings: low resolution, 40 gr/mm, entering at about 5 degrees medium resolution, 210 gr/mm, entering at about 23 degrees Beam difference: 2.72 degrees
Definition at line 277 of file isaac_physicalmodel.c.
Referenced by isaac_get_disprel_estimate().