[OpenLayers-Users] openlayers can't show an image layer in the right place starting from a center point

[Phil Scadden]

Some thoughts. Firstly, the image needs to be in the same projection as 
your base layer. Openlayers does not reproject images on the fly. If you 
instead created a layer in Geoserver from the image, then it can 
reproject but you may prefer the results from doing it in proper image 
transformation tools.

Assuming that you have got image in the correct projection, then make 
sure you do all the calculations in that baselayer projection. Your 
calculations involve a number of implicit assumptions about the 
projection and looking at your code, it appears the base layer is 
900913. This does not have linear scaling so I doubt it will work like 
that. When you say the image represents 400x400 kilometers does that 
really mean 400x400km on the ground or 400x400 projected "kms"?

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