Constellation Map is a free Android application developed by siranet that offers a fun and informative way to explore the stars, constellations, and planets. By simply pointing your device towards the sky, the app displays the names of celestial objects you can see, including about 100 bright stars, constellations, ecliptic, celestial equator, Deep Sky Objects, ISS, Celestial pole, and more.

The app also allows you to check the orbital position of planets in the solar system on a separate screen and display stars below the horizon. You can zoom in or out by using the pinch operation with two fingers and toggle the display of constellation lines, names, and more with a double touch. It's important to note that the feature that displays the names of stars and planets won't work on devices without an acceleration sensor and a geomagnetic sensor.

If you want to launch the app from a website by specifying equator coordinates, you can use the link provided on the app's website. Constellation Map is a great tool for anyone interested in astronomy, whether you're a beginner or an experienced stargazer.