WARNING! The Sun is extremely dangerous. Looking at it
with any sort of optical aid will result in instant blindness.
Look here to
see how I do it.
Sunspot Designations |
Sunspots and Active Regions are numbered by the American National Oceanic and Atmospheric Administration (NOAA) and started on 5th January 1972. These numbers now exceed 10000 but often the leading "10" is omitted. The designations of current sunspots can be found on the SOHO site. A most useful archive of diagrams of the Sun showing the positions and designations of sunspots on a daily basis right back to January 1992 is available from The Institute for Astronomy, University of Hawaii. This link will take you to their archive page from where you can select a given image by date or browse by month. I find this particularly useful if I have imaged an interesting spot after some days of cloud, and I can look back and see when the spot appeared. |
During 2004 the Sun was supposed to be on the decline of the 11-year sunspot cycle
(which peaked about 2001). However during June and August there were some very big spots at least one of
which survived a complete rotation of the Sun. Sunspots that do this are given a new number when they reappear over
the western limb but, now that it is possible to track spots on the far side of the Sun, we can be reasonably sure
that spot number 10656 was spot 10649 coming round again. Being summer time here in the UK, I was able to get quite a
few pictures; those of the whole Sun are shown below, pictures of the spots are shown on a separate page.