The software package is currently being dramatically improved and updated.
This is a (very) old version, potentially with bugs.
Shapelets web page | Shapelets IDL code | Installation | Help pages | Simulated images |
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List of routines | ||||
Instrutions for general code | ||||
Instructions for image simulation code |
This runs SExtractor on a simulated image, and creates a plot comparing its size-magnitude distribution, object number counts and ellipticity distibution to those of the Hubble Deep Fields. Assuming that the simulated image contains galaxies that were perturbed from the HDF morphology distribution, these should all match. If they don't match the used true galaxy population, the problem probably lies with the selection function of galaxies that successfullly decomposed into shapelets: if the wrong noise level were used, and faint galaxies did not make it into the true shapelet galaxy catalogue, nor will they be present in the simulated image.
See also the header below, which has been extracted from the source code for this routine.
Return to the shapelets web page or the code help menu.
Last modified on 02nd May 2008 by Richard Massey. |