As of April 13, the archive is now using the STScI Single Sign-On (SSO) identity manager.
To check on your account click
For more information about how accounts were transitioned click here.
Search and Retrieval
A "quick search" of the GSC-2 catalog may be performed by entering a
or coordinates in the form labeled GSC Target Search at the top of the left
GSC-2 Search Form
GSC-1 Search Form