Preliminary results obtained from the solar EUV experiment on board the D2B Aura satellite.
Abstract
The solar EUV experiment on board D2B has been operating successfully since November 1, 1975. Three main sets of data are being gathered: (1) spectroheliograms at a resolution of one arcmin within prominent solar lines formed at temperatures between 20,000 and 3 million K, providing detailed observations of individual active regions; (2) disk-integrated values of the solar flux in the range 17-127 nm at a resolution of 0.8 to 0.6 nm suitable for defining the spectral energy input to the upper atmosphere; and (3) simultaneous measurements of solar extinction at sunset and sunrise at eight different wavelengths, providing a partially redundant set of information for remote sounding of atmospheric composition and temperature between 100 and 400 km.
- Publication:
-
Space Research XVII
- Pub Date:
- 1977
- Bibcode:
- 1977spre.conf..519D
- Keywords:
-
- D-2 Satellites;
- Far Ultraviolet Radiation;
- Satellite-Borne Instruments;
- Solar Instruments;
- Spectroheliographs;
- Ultraviolet Spectrophotometers;
- Calibrating;
- Radiation Measurement;
- Solar Flux;
- Stellar Occultation;
- Solar Physics;
- Extreme UV:Solar Spectrum