These Web-based tools are designed to assist
scientists in their proposal and general data analysis efforts. The
HEASARC provides these tools as a service to the scientific community.
[FTOOLS, a general
FITS file utility programs and
mission-specific data analysis tools can be found on the
- X-Ray Background Tool v3.0 released (15 Aug 2018)
The X-Ray Background Tool has been enhanced with support for
counts statistics and the generation of counts-based spectra.
- xTime tool updated (14 Jun 2018)
Added support for MAXI and Hitomi and restored support for
- Timeline tool updated (15 May 2018)
Support for NICER has been added to the Timeline
- xTime tool updated (09 Apr 2018)
Support for NICER has been added to xTime. Also, the RXTE
mission day number time formats, which were really only used in mission
planning, have been removed.
- Viewing tool updated (14 Dec 2017)
The Sun angle constraint for NuSTAR observations has been
updated in the Viewing tool to be greater than 43 degrees. This reflects the
change by the NuSTAR Science Operations Center to ensure stable pointing.
This new, slightly more restrictive range applies to all future ToO requests
and Cycle 4 proposals.
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