Announcement: Chandra CalDB 2.28 released 11 August 2004

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Hello Chandra Users:

CALDB 2.28 Released - 11 August 2004
======================================================================

++ The CalDB version 2.28 is now available to download from

http://cxc.harvard.edu/ciao/download/caldb.html

CalDB 2.28 contains the following:

        - ACIS QE and -120C QEU upgrades, which fix the discrepancy
                that has existed between ACIS-S3 and ACIS-I3 measured
                source fluxes.

        - LETG/ACIS-S +/-1st order LSF parameters for the RAND_TG=0.0 case.

        - Modified LETG Grating efficiencies for higher orders
                specifically 2,4,5,6,7.

        Full release notes are available at
        http://cxc.harvard.edu/caldb/downloads/Release_notes/CALDB_v2.28.txt

++ Everything will be copied shortly on the European mirror site at:
        http://chandra.ledas.ac.uk/ciao/download/caldb.html

 As always please send questions to the CXC HELPDESK
 (http://cxc.harvard.edu/helpdesk/).

- Dale Graessle, Chandra CalDB Manager

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