here are various links to other web pages that are related to the Sun
and which I have found useful and informative.
This organisation is aimed at the active
astronomical observer. It issues a monthly magazine and email circulars
for rapid notification of astronomical discoveries and events. The
monthly magazine and web site include details of subscriber's solar observations.
founded in 1890, has a
circulars, regular meetings and a variety
sections. One of these is the solar section that issues a monthly
newsletter giving a monthly summary of solar activity from member's
Sunspot Number is
the definitive indicator of
It has been calculated daily from 1749. Currently the Sunspot Index
Data Center of the Observatoire Royal de Belgigue is responsible for
its derivation. Daily, monthly, smoothed monthly and yearly averaged
values are available in addition to various plots of this sunspot
magazine has several articles
available on their web site. One of these is on how to observe the Sun
for Popular Astronomy
have a solar section
web page that
contains an informative
spacecraft, a joint ESA/NASA mission, observes the Sun at a variety of
wavelengths and produced spectacular solar images and results. These
include excellent recent white light images (select the SOHO MDI
Intensitygram, Full Disk images for a date selected from the Soho
Summary Data column of the latest images
page). There is also a NASA
mirror web site.
of future solar eclipses can be found on NASA's web site.
Weather Prediction Center
provided information on today's
weather. This site includes current images of the Sun in white light
and H-alpha from several professional solar observatories around the
22 April 2002.