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URL: http://cxc.harvard.edu/ciao4.4/threads/acisspec_coadd/thread.html
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Coadding Spectra and Weighted Responses

CIAO 4.4 Science Threads

This thread has been replaced

The acisspec script was removed from the contributed tarfile at CIAO 4.3 (15 December 2010).

The combine_spectra script should be used in combination with the specextract script in place of acisspec, as shown in the new Coadding Spectra and Responses thread.

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