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The HEASARC is running nominally. If you are trying to download a lot of data, please consider using the AWS cloud copy of most HEASARC data. As an alternative to locally installing HEASoft, SciServer is an online platform which has the software installed and data available when you login.














The Xselect User's Guide



Version 2.5b


J. Ingham, K.A. Arnaud & M.F. Corcoran



HEASARC
Code 662
Goddard Space Flight Center
Greenbelt, MD 20771
USA


Nov 1, 2022