Sky_SiteProp Struct Reference

Site properties. More...

Data Fields
double	astLat_rad
	Astronomical latitude of site (ϕA) (radian)
double	astLong_rad
	Astronomical longitude of site (radian)
double	geocRadius_km
	Approx geocentric radius of site (≈ ae*ρ)(km)
double	rhoSin_au
	ae*ρ*sin(ϕ - ϕ′) geocentre-to-site x (AU)
double	rhoCos_au
	-ae*ρ*cos(ϕ - ϕ′) geocentre-to-site z (AU)
double	diurnalAberr
	Diurnal aberration: caused by earth rotation.
double	refracPT
	Refraction correction: pressure & temperature.
double	timeZone_d
	time zone offset from UTC (fraction of a day)
V3D_Matrix *	azElM
	points to either azElPolM or azElBaseM
V3D_Matrix	azElPolM
	rotation matrix from TIRS to Az/El coords
V3D_Matrix	azElBaseM
	as above, but excluding polar motion correctn
V3D_Matrix	haDecM
	rotation matrix from Az/El to HA/Dec coords

Detailed Description

Site properties.

Declare one object of the following type for each site that you want to calculate sky positions for (typically one site). Do not modify any of the fields in this structure directly; use the routines in this file to make all changes. In general, you won't need to access any of the individual fields here (except possibly timeZone_d)

Examples

demo1_sun.c, demo2_sun_tracking.c, demo3_moon.c, and demo4_multiple_sites.c.

Definition at line 315 of file sky.h.

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The documentation for this struct was generated from the following file:

• sky.h