Stars of the Night Sky Screen Saver displays color photos and images of constellations as your screen saver or wallpaper. It includes 15 images. The images include an information screen followed by a star chart for each constellation. You will also see galaxies, nebula, comets, and more. You can enlarge the images to fit your screen, or display them in their original size. For an artistic look you can optionally display the images in black and white.The screen saver displays the images as a slide show. You can configure it to change the images after a specified time interval (in minutes or seconds), use any of the 14 transition effects, and display the images in sequential or random order.You can choose to cycle the wallpaper every hour, day, or week, or never.