private async void OnvifUpdate(object sender, PointLatLngAlt e)
{
await device.SetTrack(HomeLoc,
e).ConfigureAwait(false);
}
private void OnvifUpdate(object sender, PointLatLngAlt e)
{
device.YawOffset = Settings.Instance.GetDouble("Dowding_trackeryaw", 0);
device.SetTrack(HomeLoc,
e).ConfigureAwait(false);
}