Astronomical Image Simulation for Telescope and Survey Development

Details Astronomical Image Simulation for Telescope and Survey Development Astronomical Image Simulation for Telescope and Survey Development

2010-08-24

arxiv.org/abs/1008.4112v2

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

10 pages, 5 figures, 3 tables, PASP accepted. Now includes reference to shapelets image simulation code 'Skylens' by Meneghett

Scientific paper

We present the 'simage' software suite for the simulation of artificial extragalactic images, based empirically around real observations of the Hubble Ultra Deep Field (UDF). 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, Point Spread Function (PSF), telescope mirror size, pixel resolution, field star density, and a variety of detector noise sources. It has the capability to create images with both a pre-determined number of galaxies or one calibrated to the number counts of pre-existing data sets such as the HST COSMOS survey. In addition, simple options are included to add a known weak gravitational lensing (both shear and flexion) to the simulated images. The software is available in Interactive Data Language (IDL) and can be freely downloaded for scientific, developmental and teaching purposes.

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