Magnetic Sunspot Classifications to Numeric System  


Picture behind Helios is from Total Solar Eclipse 31st July 1981, the year CV-Helios Network was founded
CV - Classification Values (Malde - 1981)
Latest EIT 304
EIT:  SOHO
Extreme ultraviolet
Imaging Telescope

MLSO/HAO/MK4 K-coronameter
MLSO/HAO/MK4
K-coronameter

SOHO MDI
Continuum Latest Image


Most recent FARSIDE image


Director will watch the eclipse
from Shanghai.
Anyone going there, tell us!
eclipse @ cv-helios.net

Magnetic classifications of sunspots based on the Zürich/McIntosh-system: Classification Values (C.V.) derived by Malde (1981) is:
"A 'sunspot count' derived using weighting of Zürich (Modified) McIntosh classifications":
"The 'C.V.' intends to measure the variety of sunspot region classifications with respect to their ability of survival,
typical life styles, complexity, structure, polarity, size and elongation on the solar disk."
Revised: 24 Mar 2009