In an effort to TheSky Mobile’s footprint a reasonable size, the default set of databases, including stars, deep-sky objects, photos, and the application itself, occupies about 500MB of memory on your mobile device.
After more than thirty years creating astronomy software, we well know that many astronomers want access to fainter objects, regardless of how much precious memory is occupied. So, we’ve tried to accommodate this lust for faint fuzzies by creating optional star and deep space catalogs that should satisfy the needs of even the most ardent mobile astronomer.