Hi, I just finished my first astronomical application for Android. The application is messier catalog, I hope you also find it useful! Download link: https://play.google.com/store/apps/details?id=com.domobile.messiercatalog My application is originally in Spanish but I translated to English. Please let me know if you find errors!. The application in Spanish you can find it here: https://play.google....catalogomessier Some screenshots: Night mode: Regards! Daniela.