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Webspec Logo WebSpec is a web interface for the X-ray spectral fitting package, XSPEC. It simulates spectral data for a variety of X-ray missions/instruments. WebSpec can not be used to analyze real data. This page is for the simple interface. More experienced XSPEC users, may want to use an advanced interface which allows up to 9 components. Latest news :
8/15/18XMM updated for AO18.
12/21/17Chandra updated for Cycle 20.


Specify the desired model expression by clicking on a model in each of the scroll boxes and indicating via the checkbox whether you want pileup and/or photoelectric absorption. If you only want one model then click on the top blank line in the second scroll box. When you are ready click the button to set model parameters. To start again click the reset button.


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Okay, I have read this page but I still need HELP! Feedback or questions ?

HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public

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 18 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. We thank you in advance for your valuable feedback.

This file was last modified on 15-Aug-2018