𝔖 Bobbio Scriptorium
✦   LIBER   ✦

SIMULATION OF SEEING INFLUENCES ON THE PHOTOMETRIC DETERMINATION OF SUNSPOT AREAS

✍ Scribed by Michael Steinegger; José A. Bonet; Manuel Vázquez

Book ID
110217917
Publisher
Springer
Year
1997
Tongue
English
Weight
813 KB
Volume
171
Category
Article
ISSN
0038-0938

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

On the umbra-penumbra area ratio of suns
On the umbra-penumbra area ratio of sunspots
✍ P. N. Brandt; W. Schmidt; M. Steinegger 📂 Article 📅 1990 🏛 Springer 🌐 English ⚖ 232 KB

The area ratio of umbra to penumbra (Au/Ap) was investigated for a series of 126 sunspots observed around the maximum of solar activity in 1980. Plotting log (Au) as function of log (Ap) a linear relation is obtained with a slope of 1.10, yielding an average ratio Au/Ap of 0.24 for small spots and o

On the reliability of the Catania sunspo
On the reliability of the Catania sunspot area measurements
✍ G. Godoli; O. Morgante; M. L. Sturiale 📂 Article 📅 1971 🏛 Springer 🌐 English ⚖ 91 KB

Since 1892 daily drawings of sunspot pores and sunspots have been made, at Catania, using the Cooke refractor (15 cm/223 cm) on a projected image of 24.5 cm. The results of these observations were published periodically from 1892 to 1955 in