Astronomical image simulation for telescope and survey development.
2010
We present the simage software suite for the simulation of artificial extragalactic images, based
empirically around real observations of the Hubble Ultra Deep Field. The simulations reproduce galaxies with
realistic and complex morphologies via the modeling of UDF galaxies as shapelets. Images can be created in
the B, V, i and z bands for both space- and ground-based telescopes and instruments. The simulated images
can be produced for any required field size, exposure time, PSF, telescope mirror size, pixel resolution, field star
density, and a variety of detector noise sources. It has the capability to create images with either a predetermined
number of galaxies, or one calibrated to the number counts of preexisting data sets such as the HST COSMOS
survey. In addition, simple options are included to add a known weak gravitational lensing signal (both shear
and flexion) to the simulated images. The software is available in IDL and can be freely downloaded for scientific,
developmental, and teaching purposes.
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