Soft X-ray reflectivity measurements of the mirrors flown on the Ariel-6 satellite.
Abstract
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 flow 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 observation is described.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- January 1983
- DOI:
- 10.1007/BF00655985
- Bibcode:
- 1983Ap&SS..89..325H
- Keywords:
-
- Ariel Satellites;
- Paraboloid Mirrors;
- Spaceborne Astronomy;
- X Ray Astronomy;
- Calibrating;
- Crab Nebula;
- Gold;
- Reflectance;
- Spacecraft Instrumentation;
- Mirrors:Calibrations;
- Mirrors:X-Ray Telescopes;
- X-Ray Telescopes:Mirrors