HEASARC Web Utilities: General Tools

General Tools

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 Software page].

Bibliography – Bibliographic references to HEASARC services and missions
Coordinate Converter – CoCo: Object location and coordinate converter
Energy Converter – Energy/frequency/wavelength converter
FITS File Verifier – Run fverify on any of your own FITS files
nH Column Density – Determine neutral Hydrogen column density by target coordinates
Time/Date Converter (xTime) – Convert between Julian date formats and standard date formats such as YYYY-MM-DD
Universal Atomic Database – Find atomic physics quantities needed for astrophysical research
X-Ray Background – Calculate average X-ray background count rates from the ROSAT All-Sky Survey diffuse background maps
X-Ray, Gamma-Ray, and EUV Source Finder – Is my favorite object a high-energy source?

Latest News

Viewing tool updated (11 Jul 2019)
The Swift pole constraints have been updated in the Viewing tool. The revised coefficients extrapolate the trend for the next year.
nH tool updated (16 May 2019)
The nH tool has been updated with support for the HI4PI survey map. This new map is now the default. The X-Ray Background Tool has also been updated to use the HI4PI map.
Timeline tool updated (05 Apr 2019)
The Timeline Tool has been enhanced to be more user-friendly. If no date is entered, it will now respond with the most recent date for which timeline data exists for the specified mission. Also, if only one date is queried, quick links to go to the previous and next days in the mission timeline are presented.
Viewing tool updated (17 Sep 2018)
The Swift pole constraints have been updated in the Viewing tool. The revised coefficients extrapolate the trend for the next year. The Viewing tool now also can report a "preferred" visibility window for NICER observations, which has a Sun angle constraint of 60-180 degrees. (The nominal visibility window for NICER observations is unchanged.)
Argus v4.2 released (10 Sep 2018)
Support for NICER has been added to Argus.

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HEASARC support for unencrypted FTP access will be ending on September 20, 2019. Please see this notice for details.

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