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Access to the catalogs and astronomical archives of the HEASARC

Select an interface or start using our keyword search tool below. HEASARC Data Access Xamin Interfaces Xamin Web InterfaceIntro    Our faster and more powerful access to HEASARC data Xamin API and Batch Interface Access the database with the Xamin application programming interface (API) that can perform all of the same tasks as the UI. You can also use it from your command line. Xamin VO Standard APIs For the full flexibility of SQL queries to bring complicated query logic directly to the database, you can use our VO APIs. See also tutorials for how to access these APIs in Python. Browse Interfaces   Tips Archive Browse Mission Interface   Our full-featured interface Browse Table Index Listing of all tables in the HEASARC database Browse Correlation of 2 Tables Correlation of more than 2 tables is available in Xamin Browse Notification Service Get notified when new data is available in the archive Use Xamin if you wish to monitor any query Browse Batch InterfaceDownload   Perl scripts (by default these now query Xamin database) CMB Data CMB Missions and Projects Data from space-bourne and suborbital CMB experiments in LAMBDA Specialized Forms Argus Proposal/Observation Info Search Browse proposal information for observation details and status Swift Data Query Search bursts and observations of the Swift mission Direct Access to HEASARC Archive Directories Command-Line Downloads Describes using our download script as well as wget and curl. Using HTTPS If there is a published astronomical catalog that you would like added to the HEASARC, let us know.

Other Resources SkyView - An easy-to-use tool that returns digital images of the sky in any waveband from radio through to gamma rays VAO DataScope - Query catalogs and services from the HEASARC and from around the world using a single form Literature - Links to literature search engines and online versions of refereed journals and science magazines Archive Information New and Updated Databases Deleted Databases Data restoration status of all data sets available from the HEASARC Bibliography/archive cross-reference status of HEASARC data sets with ADS-listed publications Science results that used HEASARC data The HEASARC Cookbook - how to find, download, and analyze data Open Archive Policy - find out how you can integrate HEASARC resources into your Web site Documentation for the HEASARC Database System - General description of the database system and a description of the TDAT format used to serialize data and metadata for HEASARC catalogs

Latest News NuSTAR Caldb Update (04 Feb 2025) The NuSTAR FPM caldb was updated to version 20250203. This release includes a new clock correction file, v198. Please see the release notes for more details. Chandra CALDB 4.12.0 installed at the HEASARC (31 Jan 2025) The Chandra CalDB 4.12.0 is now installed in and available from the HEASARC CALDB. Chandra 4.12.0 was released by the CXC on January 31, 2025. XMM-Newton SAS v22.0 Released (31 Jan 2025) The latest release of the XMM-Newton Science Analysis Software is now available. NICER Patching Assessment after Spacewalk 91 (24 Jan 2025) Verification observations of the installation of 9 patches during U.S. Spacewalk 91 show that the detectors behind the patched optics are receiving lower levels of optical light during orbit night, and the level of light inside the instrument during orbit day is substantially reduced. Some continued data degradation due to sunlight during orbit day is, however, still evident. NICER continues to operate with its full measurement capabilities during orbit night, and assessment of daytime data recovery is ongoing. NuSTAR Caldb Update (22 Jan 2025) The NuSTAR FPM caldb was updated to version 20250122. This release includes a new clock correction file, v197. Please see the release notes for more details. Swift SC CALDB updated (22 Jan 2025) The Swift SC has been updated to version 20250121 to update the clock correction file to v164. [What is this?]