Cosmic Star Projection

You project a map of the stars into the air. A completely accurate starmap of the local sky is projected upwards from the mirror onto the surface above the mirror (such as a ceiling) or 30 feet into the air if there is none. At any time after the initial casting, you can use an action to lower the projection or zoom in to or out of a portion of the map. You can also touch a star on the map and learn its name as a bonus action. It can be used to study the sky or, if cast outside, aid in navigation during the day or on overcast nights.