Dady, use this method, it is perfect..
1. search
www.flickr.com for the stadium, and enlarge the photo on the site.
2. Copy and Paste into photoshop.
3. In photoshop, make a new image of 1024x512.
4. Add the stadium image as new and resize it to to 2048, and let the height resize too automatically.
5. Crop the photo so it is near to 1024x512 (try to get the best angle)
6. Highlight half of the image and add into your 1024x512 image.
7. Scale down the size so it fits 1024x512 exactly. Save it
8. Take the other half of the stadium photo and repeat step 7, but be sure to match the images perfectly so you can't see a join (sometimes you will but it's minor)
9. Add into the 1 and 2 files and add file to game. When the screen pans, you will have a perfect panoramic view in full scale.