The Chromosphere in Continuum Emission Observed at the Total Solar Eclipse on 7 March 1970
Abstract
Direct images of the Sun were photographed in continuum emission centered at 6900 Å by the jumping film method near the second contact of the Mexico eclipse on 7 March 1970. The band width was 150 Å defined by a combination of a sharp cut filter and KODAK IV F film. The intensity distribution of the solar outer layers obtained shows a steep decrease by a factor of 0.9 in logarithmic units around 2500 km. This is interpreted as the boundary of the chromosphere and corona. Spicules observed at 3500 km are explained by log ne = 11.25 and Te ≈ 6000 K. Discussions are made in relation to the other observations and some chromosphere models.
- Publication:
-
Solar Physics
- Pub Date:
- May 1972
- DOI:
- 10.1007/BF00231082
- Bibcode:
- 1972SoPh...24...59M
- Keywords:
-
- Intensity Distribution;
- Outer Layer;
- Band Width;
- Solar Eclipse;
- Direct Image