This image is a portion of one of the first images obtained with
ESA's Faint Object Camera onboard the Hubble Space Telescope. Even though this test image was taken with the telescope still not yet completely in focus, the dramatic improvement in spatial resolution provided by the Faint Object Camera is immediately apparent. The stellar images display a sharp
core of diameter less than 0.1 arcseconds surrounded by an approximately 8 times larger diffuse "halo".