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.
(HEASoft/FTOOLS, a general
FITS file utility programs and
mission-specific data analysis tools can be found on our
- Viewing tool updated (26 May 2020)
Support for XMM-Newton has been updated to work with the latest
version of the ESA XMM-Newton Target Visibility Checker.
- Timeline tool updated (14 Apr 2020)
Support for HaloSat has been added to the Timeline
- xTime tool enhanced (01 Apr 2020)
Support for INTEGRAL Julian Dates has been added. Also, xTime
will now calculate time intervals (in days/hours/minutes/seconds, fractional
days, and total seconds) between successive date/time conversions.
- Viewing tool updated (20 Mar 2020)
The Swift pole constraints have been updated in the Viewing
tool. The revised coefficients extrapolate the trend for the next
- Viewing tool updated (02 Dec 2019)
Support for the upcoming IXPE mission has been added to
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