This app is for both photographers and astronomers, and is designed to reduce the noise in the images generated by the camera's sensor. This app supports both normal images stacking and astro-images stacking, and also supports auto alignment. Normal stacking mode is useful when you want to stack normal images like mountains images, daylight images, dark situations images, fixed landscapes, and etc… Astro-stacking mode is useful when you want to stack deep space objects like the Milky Way, Orion, horsehead nebula, and etc.