SMART, the "Spectroscopic Modeling Analysis and Reduction Tool," is a software package to reduce and analyze data from the Infrared Spectrograph (IRS) on the Spitzer Space Telescope. Updates/downloads are provided on this web page from the development team at Cornell University.

Downloading SMART

"I just love the new version and the optimal extraction -- great job, thanks a lot!" --

"I used AdOpt [Advanced Optimal Extraction] a few weekends ago to extract a spectrum and it is amazing! Everyone should try it!" --

[Re: super-resolution extraction] "I didn't know that (super-resolution) was going into this version! B and I have always wanted to have all the sampling back..." --

  • New version Download SMART package v8.2.9 (Sep 30, 2014). Note that if you changed the location of your user parameter directory (smart_bin) for previous installations (located by default in the smart/ directory), you should remove it before running the new version. Full instructions about installing SMART on your system are given in the Installation Guide.

  • Stay up to date!
    • Version history and scheduled updates.
    • Make sure you have the latest version by clicking on Help->Check update in the main SMART window.
    • New versions and major modifications are announced via the smart-release mailing-list.
    • The version 8.0.0 released the 9th of October 2009 contained a bug in the flux calibration (optimal extraction). Also, the flux calculated for sources offset in the dispersion direction (the on-the-fly PSF was created correctly, resulting in a good fit, but the flux level was wrong). Version 8.0.1 corrects these issues. The new calibration file package should also be downloaded.

    • IMPORTANT NOTE: there is now a single package for SMART and the calibration files. Both have been updated and are gathered in a single package. If you still want to download the SMART software and the calibration files separately, please contact the SMART team directly.
    • tip.gif The calibration files tarball contains the SSC supplied Calibration files used by Smart up to and including version s18.18.0.
    • The Calibration Files within SMART contains only the files used by Smart. For custom extractions using other calibration files, please contact the SMART team directly.

Citing SMART

We request that authors using data from the IRS and/or the SMART software include the following citations in their papers :

Should I use SMART or CASSIS?

SMART is a reduction and analysis tool with many features to manage various data products from the IRS (and other instruments, e.g., ISO), extract spectra in multiple ways, and examine spectra in details (fringes, fit of spectral features, black body fitting, etc...). SMART allows extracting spectra of complex objects (multiple, blended, with an extended background emission, etc...). The list of possibilities within SMART is too long to list here.

CASSIS is an atlas in which spectra have been reduced and extracted automatically. The extraction method is selected automatically based on the source extent, providing a publication-ready spectrum.

In summary:

  • Spectral extraction: if the spatial structure of the source doesn't have to be decomposed and if the source is less extended than the aperture, users are encouraged to use CASSIS spectra. We advise users to explore the various diagnostic tools available on the CASSIS website to judge the quality of the extraction.
  • For any other use than investigating a spectrum (e.g., to view IRS detector images, perform specific tasks like line fitting), and in particular to extract spectra of complex sources, users are encouraged to use SMART.

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