I am looking for different options to add historical satellite imagery to our online-based application. We currently incorporate Bing Maps into our application, but cannot get historical imagery. I am essentially looking for something like Google Earth with its historical imagery slide bar. I am currently looking into using services from Google Earth and Digital Globe.
I have also looked into NAIP imagery. I tried downloading the .sid files for one state and one year, but am having trouble. I downloaded the data from Geospatial Data Gateway in county files. I was trying to clip the county .sid files because of the noise around each .sid file. The noise that I am referring to is not the black border, but pixels that received none zero values in the border. In the end I need to have a seamless image. I am not sure where I would go from this spot of having clean county imagery. I need an opensource way to create a mosaic dataset. If I stick with this option, I think I would be looking at Terabytes of imagery.
What are my options? What else is out there? What could I be doing differently?