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Extraction and Calibration

aXe Reduction Methodology in a Nutshell

The aXe reduction tasks enable automated, efficient extraction of thousands of spectra from slitless spectral images. The software drives the spectral extraction based on two sets of information:

aXe is not instrument specific, and can accommodate data from different instrument/grism combinations by specifying the required parameters in the configuration file.

Software Access

aXe is a set of C-based routines, wrapped up into PyRAF/IRAF software which is comprised of several tasks and is distributed as a subpackage of the Space Telescope Data Analysis System (STSDAS) under analysis.slitless.axe.

Instructions on how to to install aXe can be found at


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