Published November 1990
| Version v1
Journal article
A.L.P.O. solar section observations for rotations 1818-1823 (1989 Jul 19 to Dec 29)
Description
This report summaries A.L.P.O. solar section observations for rotations 1818-1823 July 19 to December 29, 1989, particularly in terms of the morphology and development of sunspot groups. Twenty-four observers in five nations contributed visual drawings and integrated-light and H-alpha photographs. Solar activity tended to increase in this period; the highest rotational means were slightly lower, but the lowest means were somewhat higher, than those for the previous reporting period (Rotations 1813-1817). 9 refs
Additional details
Publishing Information
- Journal Title
- Strolling Astronomer
- Journal Volume
- 34
- Series
- Stroll. Astron.
- Journal Page Range
- 170-176
- ISSN
- 0039-2502
- CODEN
- STASA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22040171
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- BALMER LINES; DATA PROCESSING; MONITORING; MORPHOLOGICAL CHANGES; PHOTOGRAPHY; ROTATION; SOLAR ACTIVITY; SOLAR FLARES; SUNSPOTS
- Descriptors DEC
- STARSPOTS; STELLAR ACTIVITY; STELLAR FLARES