OpenLayer Coordinate System

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I'm struggling to understand the coordinate system used by OpenLayers.

Leicester, UK is at approx.

Latitude:  52.63973017532399
Longitude: -1.142578125

But to display the same location using OpenLayers I have to use:

Latitude:  6915601.9146245
Longitude: -125089.1967713

e.g:

var center  = new OpenLayers.LonLat(-125089.1967713, 6915601.9146245);
var map     = new OpenLayers.Map("demoMap");
map.addLayer(new OpenLayers.Layer.OSM());
map.setCenter(center, 12);

These are clearly not Latitude-Longitude coordinates, is there some conversion I need to take account of?

A working example is http://craig-russell.co.uk/demos/openlayers/so_map.html

2 Answers
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