Topic: Orthorectification went wrong
I'm using ASTER L1A imagery as a raw file, Landsat ETM+ imagery that is already georeferenced and an ASTER GDEM at 30m resolution, patched together so it matches the whole area of the pictures. I had problems before which where due to the DEM having holes, so the picture came out blurred. i have now succeeded in producing a focused, orthorectified image following the instructions. Or have I? Upon linking the displays i find that the new image is completely out of place. The blurry picture was in the right place. The only thing i changed was taking the Map Grid from the georeferenced picture for blurry result to using the raw images map grid for the good looking but misplaced picture. My instructions however tell me to take the map grid from the raw image, so how can this be?