For high resolution (1m pixel) satellite imagery, Apollo Mapping is the CGA's recommended vendor. Make sure to ask for academic pricing. Other satellite imagery data sources:
Remote Sensing Data & Processed Imagery Sources:
- ASTER Global DEM Data
- ESA Global Land Cover
- Global Land Cover Facility UMD
- SRTM 90m Digital Elevation Data
- UK and Scotland georeferenced maps
- Alaska Satellite Facility
- USGS Earth Explorer
See also: Data