NovasEqu2Hor Method

public static void Equ2Hor(
	double Jd_Ut1,
	double DeltT,
	Accuracy Accuracy,
	double xp,
	double yp,
	OnSurface Location,
	double Ra,
	double Dec,
	RefractionOption RefOption,
	ref double Zd,
	ref double Az,
	ref double RaR,
	ref double DecR
)

Public Shared Sub Equ2Hor ( 
	Jd_Ut1 As Double,
	DeltT As Double,
	Accuracy As Accuracy,
	xp As Double,
	yp As Double,
	Location As OnSurface,
	Ra As Double,
	Dec As Double,
	RefOption As RefractionOption,
	ByRef Zd As Double,
	ByRef Az As Double,
	ByRef RaR As Double,
	ByRef DecR As Double
)

Parameters

Jd_Ut1  Double

UT1 Julian date.

DeltT  Double

Difference TT-UT1 at 'jd_ut1', in seconds.

Accuracy  Accuracy

Selection for accuracy

xp  Double

Conventionally-defined x coordinate of celestial intermediate pole with respect to ITRS reference pole, in arcseconds.

yp  Double

Conventionally-defined y coordinate of celestial intermediate pole with respect to ITRS reference pole, in arcseconds.

Location  OnSurface

Structure containing observer's location

Ra  Double

Topocentric right ascension of object of interest, in hours, referred to true equator and equinox of date.

Dec  Double

Topocentric declination of object of interest, in degrees, referred to true equator and equinox of date.

RefOption  RefractionOption

Refraction option. 0 ... no refraction; 1 ... include refraction, using 'standard' atmospheric conditions; 2 ... include refraction, using atmospheric parameters input in the 'Location' structure.

Zd  Double

Topocentric zenith distance in degrees, affected by refraction if 'ref_option' is non-zero.

Az  Double

Topocentric azimuth (measured east from north) in degrees.

RaR  Double

Topocentric right ascension of object of interest, in hours, referred to true equator and equinox of date, affected by refraction if 'ref_option' is non-zero.

DecR  Double

Topocentric declination of object of interest, in degrees, referred to true equator and equinox of date, affected by refraction if 'ref_option' is non-zero.

Reference