private void SetupDome_Click(object sender, EventArgs e)
        {
            try {
                ASCOM.Utilities.Chooser Ch = default(ASCOM.Utilities.Chooser);
                string SelectedDevice      = null;

                Ch            = new ASCOM.Utilities.Chooser();
                Ch.DeviceType = "Dome";

                SelectedDevice = Ch.Choose();
                Ch.Dispose();
                Ch = null;
            } catch (Exception ex) {
                MessageBox.Show(ex.Message);
            }
        }