The Redshift 7 Premium Download Edition and Redshift 7 Premium Multimedia are equipped with database of 2.5 million stars. Downloading this Plugin will allow you the same functionality as in the Redshift 7 Premium DVD. It expands the database to 100 million stars from the USNO-B1.0-Catalog. It contains all stars with a magnitude of 15.7 and brighter. This plugin only runs with the Redshift 7 Premium Multimedia Edition.