auxprm Struct Reference

Additional auxiliary parameters. More...

#include <wcs.h>

Data Fields
double	rsun_ref
double	dsun_obs
double	crln_obs
double	hgln_obs
double	hglt_obs
double	a_radius
double	b_radius
double	c_radius
double	blon_obs
double	blat_obs
double	bdis_obs
double	dummy [2]

Detailed Description

Additional auxiliary parameters.

The auxprm struct holds auxiliary coordinate system information of a specialist nature. It is anticipated that this struct will expand in future to accomodate additional parameters.

All members of this struct are to be set by the user.

Field Documentation

rsun_ref

double auxprm::rsun_ref

(Given, auxiliary) Reference radius of the Sun used in coordinate calculations (m).

dsun_obs

double auxprm::dsun_obs

(Given, auxiliary) Distance between the centre of the Sun and the observer (m).

crln_obs

double auxprm::crln_obs

(Given, auxiliary) Carrington heliographic longitude of the observer (deg).

hgln_obs

double auxprm::hgln_obs

(Given, auxiliary) Stonyhurst heliographic longitude of the observer (deg).

hglt_obs

double auxprm::hglt_obs

(Given, auxiliary) Heliographic latitude (Carrington or Stonyhurst) of the observer (deg).

a_radius

double auxprm::a_radius

Length of the semi-major axis of a triaxial ellipsoid approximating the shape of a body (e.g. planet) in the solar system (m).

b_radius

double auxprm::b_radius

Length of the intermediate axis, normal to the semi-major and semi-minor axes, of a triaxial ellipsoid approximating the shape of a body (m).

c_radius

double auxprm::c_radius

Length of the semi-minor axis, normal to the semi-major axis, of a triaxial ellipsoid approximating the shape of a body (m).

blon_obs

double auxprm::blon_obs

Bodycentric longitude of the observer in the coordinate system fixed to the planet or other solar system body (deg, in range 0 to 360).

blat_obs

double auxprm::blat_obs

Bodycentric latitude of the observer in the coordinate system fixed to the planet or other solar system body (deg).

bdis_obs

double auxprm::bdis_obs

Bodycentric distance of the observer (m).

Global variable: const char *wcs_errmsg[] - Status return messages Error messages to match the status value returned from each function.

dummy

double auxprm::dummy[2]