Spectroscopic observations in SOLAR-B.
Abstract
An XUV spectroscopic imager is proposed on board SOLAR-B to link the observations in the photosphere and the corona, and to observe the velocity field in the transition region and lower corona. A 4,800 gr/mm concave grating is responsible for spectroscopic measurements. In order to achieve high throughput of the instrument, the collecting mirror and the grating are LSM coated. Restriction of the observing wavelengths, which are, at the moment, 250 - 290 Å, reduces the abberations and increases the efficiency of the spectrograph system, which will enable, for the first time, high-cadence observations in these wavelengths. Introduction of a spherical grating with varied-spacings also help improving off-axis optical performances.
- Publication:
-
UV and X-ray Spectroscopy of Astrophysical and Laboratory Plasmas
- Pub Date:
- 1996
- Bibcode:
- 1996uxsa.conf..219W
- Keywords:
-
- Space Missions: Space Instrumentation;
- Space Missions: Solar Photosphere;
- Space Missions: Solar Corona