Creating new thread with WPF window

Program.cs

 class Program
    {
        static void Main(string[] args)
        {
            var observable = Observable
                .Interval(TimeSpan.FromMilliseconds(500))
                .TakeWhile(counter => counter < 10);

            var thread = new Thread(() =>
            {
                new TestWindow(observable);
                Dispatcher.Run();
            });

            thread.SetApartmentState(ApartmentState.STA);
            thread.IsBackground = true;
            thread.Start();

            Console.ReadKey();
        }

        public class TestWindow : Window
        {
            public TestWindow(IObservable<long> observable)
            {
                var isDispatcherInitialized = false;

                Dispatcher.Invoke(() => isDispatcherInitialized = true, DispatcherPriority.ApplicationIdle);

                if (!isDispatcherInitialized)
                    throw new ApplicationException("Dispatcher not initialized");

                observable
                    .ObserveOnDispatcher()
                    .Window(TimeSpan.FromMilliseconds(600))
                    .Subscribe(_ => Console.WriteLine($"OnNext, observed on dispatcher with Window operator"));
            }
        }
    }