An Amateur Spectroheliograph.
| Autor: | Zetner, Peter1 |
|---|---|
| Zdroj: | Journal of the Royal Astronomical Society of Canada. Aug2015, Vol. 109 Issue 4, p151-156. 6p. |
| Databáze: | Academic Search Ultimate |
| Externí odkaz: |
|
| Autor: | Zetner, Peter1 |
|---|---|
| Zdroj: | Journal of the Royal Astronomical Society of Canada. Aug2015, Vol. 109 Issue 4, p151-156. 6p. |
| Databáze: | Academic Search Ultimate |
| Externí odkaz: |
|