Heliographic Coordinates v0.2

Step: 1/3
Choose an image where you want to measure the coordinates

Choose an image from our Solar Observatory using the calendar
Just like the Earth has Equatorial coordinates, the Sun, which has also an equator, has an ecuatorial coordinate system too: the Heliographic coordinates. In this coordinate system, we have also a longitude between 0º and 360º and a latitude from 0º to 90º both hemispheres.

In order calculate what are the coordinates of a sunspot in a more accurate way, we will need a grid to overlap to our images. First of all, choose an image of the Sun where you want to measure the coordinates.