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High-resolution Imaging of the Upper Solar Chromosphere: First Light Performance of the Very-high-Resolution Advanced ULtraviolet Telescope
Authors:Korendyke  CM  Vourlidas  A  Cook  JW  Dere  KP  Howard  RA  Morrill  JS  Moses  JD  Moulton  NE  Socker  DG
Institution:(1) E.O. Hulburt Center for Space Research, Naval Research Laboratory, Washington DC , 20375, U.S.A;(2) Center for Earth Observing and Space Research, George Mason University, Fairfax, VA 22030, U.S.A;(3) Laboratory for the Physical Sciences, College Park, MD, U.S.A
Abstract:The Very-high-resolution Advanced ULtraviolet Telescope (VAULT) experiment was successfully launched on 7 May 1999 on a Black Brant sounding rocket vehicle from White Sands Missile Range. The instrument consists of a 30 cm UV diffraction limited telescope followed by a two-grating, zero-dispersion spectroheliograph tuned to isolate the solar Lagr emission line. During the flight, the instrument successfully obtained a series of images of the upper chromosphere with a limiting resolution of simthinsp0.33 arc sec. The resulting observations are the highest-resolution images of the solar atmosphere obtained from space to date. The flight demonstrated that sub-arc second ultraviolet images of the solar atmosphere are achievable with a high-quality, moderate-aperture space telescope and associated optics. Herein, we describe the payload and its in-flight performance.
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