The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 20 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. The survey is open until Dec 18, 2023. We thank you in advance for your valuable feedback.

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---Quick Links--- ---Archive Interfaces--- Argus: proposal info Browse: search HEASARC archives NVO DataScope SkyView: virtual observatory Xamin: powerful archive search ---Software & Tools--- CalDB: Calibration database Coordinate Converter Energy Converter FITS: standard data format FITSIO: FITS subroutine library FTOOLS: general s/w for FITS files fv: FITS file editor Hera: remote data analysis service HEXTErock nH: Column Density RPS proposal submission RXTE ASM weather map Time/Date Converter (xTime) Timeline (RXTE, Swift, & HETE-2) Viewing: possible obs. times WebPIMMS: flux/count converter WebSpec: spectral sims Xanadu: data analysis suite X-ray Background Tool X-ray, Gamma-ray, EUV Source Finder ---Resources--- Bibliography Contact Info Deadlines (proposals & meeting regist.) History of High-Energy Astronomy Staff Upcoming Meetings Upcoming Summer Schools What's New ---Education & Pub. Outreach--- APOD: Astronomy Picture of the Day Ask an Astrophysicist HEASARC Picture of the Week Images, Spectra, Light Curves Imagine the Universe! StarChild (K-8 EPO) WebStars: gen. astronomy info/news