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8 October 1992 ALEXIS experiment: current status and performance
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The Array of Low Energy X-ray Imaging Sensors (ALEXIS) experiment consists of a mini-satellite containing six wide angle EUV/ultrasoft X-ray telescopes. Its purpose is to mp out the sky in three narrow (5%) baridpasses around 66, 71, arid 93 eV. The mission will be launched on the Pegasus Air Launched Vehicle in 1992 into a 400 nautical mile, high inclination orbit. The project is a collaborative effort between Los Alamos National Laboratory, Sandia National Laboratory, and the University of California-Berkeley Space Sciences Laboratory. The six telescopes are arranged in three pairs in such a manner that as the satellite spins twice a minute they scan the entire antisolar hemisphere. Each f/i telescope consists of a spherical multilayer coated mirror with a spherical microchannel plate detector located at the prime focus and a thin aluminum or lexan/boron filter in front of the detector. The multilayer coatings determine the bandpasses of the telescopes. Each telescope has a field of view of 33 degrees. Unlike grazing incidence x-ray telescopes, the point spread function is uniform over the entire field of view with a FWHM of O.5degrees determined by spherical aberration. In this paper we present the status of the project as of July i992 as well as summary results from the pre-flight telescope calibration procedures.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jeffrey J. Bloch, William C. Priedhorsky, Diane C. Roussel-Dupre, Bradley C. Edwards, and Barham W. Smith "ALEXIS experiment: current status and performance", Proc. SPIE 1743, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy III, (8 October 1992);


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