New Eyes on the Sun by John Wilkinson

Author:John Wilkinson
Language: eng
Format: epub
Publisher: Springer Berlin Heidelberg, Berlin, Heidelberg

Daily drawings of sunspot groups can be used to monitor their evolution (change in shape and appearance) as they move across the Sun’s disc. Remember a single spot is also a group. Groups can also be classified according to the system in Chap. 3 (Table 3.1) or any other classification system. Take care to record differences between penumbra and the umbra of sunspots. Also note the location of any bright patches or faculae. A red/orange filter in the eyepiece is sometimes useful when counting sunspots, while a blue filter is often useful for observing faculae and granulation. Astronomical societies have sections for solar observing – it is best to join one of these and work in with other amateurs (you also learn a lot from experienced people) (Fig. 6.3).

Fig. 6.3Drawing showing the evolution of a sunspot group over a number of days.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.