ESA's Faint Object Camera First Images
Date: 22 June 1990
Satellite: Hubble Space Telescope
Depicts: First Light
Two views of a small (4.6 by 6.2 arcsecond) star field in the galactic cluster NGC 188 containing two stars separated by 2.9 arcseconds in the sky. Located at a distance of about 5,000 light years, both stars are far too remote for their surfaces to be resolved, and are therefore suitable point sources for evaluating optical imaging quality.
Last Update: 1 September 2019