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Einstein HRI Photon Event Data

Published by High Energy Astrophysics Science Archive Research Center | National Aeronautics and Space Administration | Catalog Last Checked: November 10, 2026 at 11:58 PM | Dataset Last Updated: November 05, 2026
The HRIPHOT database contains information from the High Resolution Imager aboard HEAO-2, the Einstein Observatory, in Event List Format. Einstein incorporated a high-resolution X-ray telescope and a focal plane assembly capable of positioning at its focus one of four instruments: a high- resolution imaging detector (HRI), a broader-field imaging proportional counter (IPC), a solid state spectrometer (SSS), and a Bragg crystal spectrometer (FPCS). Einstein (HEAO-2) was launched on November 13, 1978, and operated successfully until April 1981. This is a service provided by NASA HEASARC .

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