private void CalculateAltitude()
{
var start = this._referenceDate;
Altitudes.Clear();
var siderealTime = Astrometry.GetLocalSiderealTime(start, _longitude);
var hourAngle = Astrometry.GetHourAngle(siderealTime, this.Coordinates.RA);
for (double angle = hourAngle; angle < hourAngle + 24; angle += 0.1)
{
var degAngle = Astrometry.HoursToDegrees(angle);
var altitude = Astrometry.GetAltitude(degAngle, _latitude, this.Coordinates.Dec);
Altitudes.Add(new DataPoint(DateTimeAxis.ToDouble(start), altitude));
start = start.AddHours(0.1);
}
MaxAltitude = Altitudes.OrderByDescending((x) => x.Y).FirstOrDefault();
CalculateTransit(_latitude);
}