The original CfA-Arizona Space Telescope Lens Survey (CASTLeS) was a collaboration
between scientists at the Harvard-Smithsonian Center for Astrophysics and
the University of Arizona. We carried out a complete survey of all
known galaxy-mass gravitational lens systems (those with image separations
of less than 10 arcseconds). We used the Hubble Space Telescope to
obtain deep, high-resolution images in the optical and near infrared, using
NICMOS/NIC2 for H band observations and WFPC2/PC1 for V and I band images
where they do not yet exist. Since the original survey, the number of lens systems
have grown dramatically. We continue to update these web pages with the latest
HST observations of lens systems.
Among our project goals are to:
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