/// Compute Ra Dec
public static CroodAzAlt FromRaDecToAzAlt(CroodLonLat Location, CroodRaDec RaDec, Angle LST)
{
Angle Ha = LST - RaDec.Ra;
double Az = Math.Atan2(Math.Sin(Ha), Math.Cos(Ha)
* Math.Sin(Location.Lat) - Math.Tan(RaDec.Dec) * Math.Cos(Location.Lat));
double Alt = Math.Asin(Math.Sin(Location.Lat) * Math.Sin(RaDec.Dec)
+ Math.Cos(Location.Lat) * Math.Cos(RaDec.Dec) * Math.Cos(Ha));
return(new CroodAzAlt(Az + Math.PI, Alt));
}
/// Compute Ra Dec
public static CroodAzAlt FromRaDecToAzAlt(CroodLonLat Location, CroodRaDec RaDec, Angle LST)
{
Angle Ha = LST - RaDec.Ra;
double Az = Math.Atan2(Math.Sin(Ha), Math.Cos(Ha)
* Math.Sin(Location.Lat) - Math.Tan(RaDec.Dec) * Math.Cos(Location.Lat));
double Alt = Math.Asin(Math.Sin(Location.Lat) * Math.Sin(RaDec.Dec)
+ Math.Cos(Location.Lat) * Math.Cos(RaDec.Dec) * Math.Cos(Ha));
return new CroodAzAlt(Az + Math.PI, Alt);
}
