Soft X-ray reflectivity measurements of the mirrors flown on the Ariel-6 satellite

Details Soft X-ray reflectivity measurements of the mirrors flown on the Ariel-6 satellite Soft X-ray reflectivity measurements of the mirrors flown on the Ariel-6 satellite

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..89..325h&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 89, no. 2, Jan. 1983, p. 325-339.

Astronomy and Astrophysics

Astronomy

1

Ariel Satellites, Paraboloid Mirrors, Spaceborne Astronomy, X Ray Astronomy, Calibrating, Crab Nebula, Gold, Reflectance

Scientific paper

This paper describes the detailed calibration at soft X-ray energies (0.1 - 2.0 keV; 125 Å - 6 Å) of gold coated, paraboloidal X-ray mirrors, four of which were subsequently flown on the Ariel-6 satellite. Uncertainties in the attitude of the satellite together with an apparent reduction in sensitivity of the soft X-ray experiment necessitated observations using the Crab Nebula as a reference. These showed that a dramatic reduction in the reflection efficiencies of all four mirrors had occurred, almost certainly after or during launch. An initial recalibration of the mirrors using the Crab observations is described.

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