Darth Fader

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Authors: D. Machado, A. Leonard, J-L. Starck, and F. Abdalla
Language: IDL
Download: DFV1.0.tgz
Description: An IDL code designed for estimating galaxy redshifts from spectroscopic data using wavelets.
Notes: Requires iSAP installation

The Darth Fader method is a catalog cleaning method for redshift estimation which is described in:


The code will be soon integrated in the next version of the iSAP software. Meanwhile, it can be used following these instructions:

The documentation is available here.


Benchmark data are available here, and the following routine shows how to use it on these benchmark data:

Running this routine, we obtain the following results:

  • % of catastrophic failures before cleaning = 22.09
  • % of galaxies retained after cleaning = 75.80
  • % of catastrophic failures after cleaning = 4.29

Contact information

For any information related to the code, please contact Adrienne Leonard (adrienne.leonard AT cea DOT fr).

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Author: Samuel Farrens

I have been a postdoctoral researcher at CEA Saclay since October 2015. I am currently working on the DEDALE project and the Euclid mission with Jean-Luc Starck.

My background is in optical detection of clusters of galaxies and photometric redshift estimation. I am now branching out into the field of PSF estimation using sparse signal processing techniques.

View all posts by Samuel Farrens >