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X-ray data and analysis packages can now be distributed directly to the desks of the user community using CDROMs and portable, familiar analysis packages (like IRAF/PROS). The Einstein IPC Slew Survey is an example of a complete X-ray data set distributed via CDROMs and is the first to use the new FITS standard for photon event lists (BINTABLE)

X-ray data from the ROSAT satellite will be distributed to Guest Observers on FITS tapes. The precise contents and format of the tape were chosen bearing the following issues in mind: 1. The primary data component for an X-ray observation is a list of photon events, and the user requires additional data for selection and analysis of the primary

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The microchannel plates, on which are based the operation of two-dimensional photon-counting detectors, have a local dead time (at each microchannel) much greater than the frame time used to capture images in techniques of Speckle interferometry. This phenomenon restricts the conditions for use of these detectors with regard to luminous intensity

This document presents a proposal for the design of the LEST correlation tracker prototype. The proposed correlator, based on the absolute differences algorithm, is built around the LSI L64720 (Video Motion Estimation Processor) chip. The performances of the tracker system are established according to the LEST specifications and the experience