Tools Astrocalculator Equatorial/Galactic Coordinates module The Equatorial/Galactic Coordinates calculator module Equatorial/Galactic Coordinates This module converts from Equatorial coordinates to Galactic coordinates, and vice versa. First, select which coordinates should be taken as input values in the Input Selection section. Then, fill in the corresponding coordinate values in either the Galactic coordinates or Equatorial coordinates section. Finally, press the Compute button, and the complementary coordinates will be filled in.