An imaging soft X-ray telescope for Spacelab
Abstract
A grazing-incidence soft X-ray telescope (SXT) of Wolter Type I design is described which has been proposed for use in Spacelab missions. The SXT consists of a four-mirror nested array of confocal paraboloid-hyperboloid elements and is intended to have optimal response in the wavelength range from 6 to 100 A (it also covers the range between 100 and 1000 A). Basic elements of the SXT are reviewed together with a design study of two different hyperboloid lengths. An objective grating for studying point-source spectra is examined, and several focal-plane detectors are discussed, including an image-sensitive proportional counter, a channel electron multiplier array, and a gas scintillation proportional counter. SXT sensitivity is estimated for eight wavelength ranges between 8 and 1100 A.
- Publication:
-
COSPAR, 20th Plenary Meeting
- Pub Date:
- June 1977
- Bibcode:
- 1977cosp.meetR....C
- Keywords:
-
- Grazing Incidence Telescopes;
- Imaging Techniques;
- Photosensitivity;
- Spaceborne Telescopes;
- Spacelab;
- X Ray Telescopes;
- Focal Plane Devices;
- Hyperbolas;
- Mirrors;
- Mission Planning;
- Parabolic Reflectors;
- Spectral Resolution;
- Astronomy