The app allows you to view the 110 objects in the Messier catalog and the 812 main objects in the New General Catalog (NGC). You can add photos taken during your observations for each object. You can filter objects by category (galaxies, nebulae, clusters) and view the observing order for the annual Messier Marathon. You can also view the list of the 812 main objects in the New General Catalog (NGC). Statistics allow you to track the progress of your observations. The app is available in French and English.
