GRALE is a set of tools - a library and a number of accompanying
applications - to study gravitational lenses. Gravitational
lenses are astronomical objects so massive that their
gravitational pull even deflects light rays. This can cause
multiple copies of the same background object to be visible,
like a cosmic mirage. The locations and shapes of these copies
can provide information about the mass distribution of the
gravitational lens, which GRALE can help recover using a genetic
algorithm-based method. Apart from these so-called lens
inversions, it's also possible to simulate gravitational lenses.
AstroBuffer is a CCD astrophotography image manipulation
application. It can open FITS and SBIG (st9) files. Contrast is
adjustable to view different backgrounds and ranges of an image.
It can scale, shift, rotate, and zoom in and out. Images can be
aligned based on two star alignment, and can be summed,
subtracted, averaged, and divided. RGB color images can be
created from three images. Images can be saved as F