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Proceedings Paper

Pan-American Astrophysics Explorer: a small explorer far-UV survey mission
Author(s): Christopher Martin
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Paper Abstract

NASA plans for PAX, a photometric and spectroscopic FUV survey mission utilizing a Small Explorer spacecraft, are summarized. PAX is to perform an all-sky survey to limiting magnitude 18 at 140 and 180 nm, deep surveys of selected areas to 21 mag in the same bands, and a spectroscopic survey of 2 percent of the sky to 18 mag. The PAX telescope parameters include diameter 33 cm, focal length 72 cm, plate scale 0.3 arcsec/micron, focal ratio 2.2, FOV 4.8 deg, and system angular resolution 15 arcsec; the microchannel-plate detector employs CsI/KBr photocathodes and a mosaic wedge-and-strip readout scheme. The principal scientific aim of PAX is to increase by a factor of 100-1000 the number of known galactic nuclei, QSOs, active galaxies, white dwarfs, cataclysmic variables, and evolved stars. The mission should also provide new insights into post-main-sequence stellar evolution, star formation in normal galaxies, the distribution of dust in the Galaxy, and the ionization and large-scale distribution of the intergalactic medium.

Paper Details

Date Published: 1 July 1990
PDF: 17 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19152
Show Author Affiliations
Christopher Martin, Columbia Univ. (United States)


Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

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