Large Sunspot groups on the Solar disc, date and observer unknown
Related posts:
- Young Astronomers’ Day 18, March 3rd, 2001
- Transient Lunar Phenomena and its relation to Solar activity
- Solar Day at Liverpool World Museum
- Solar Flare and Sunspot Observations, by Eric Strach, June and November 1998
- Images from Switzerland, by Tony Williams
- Strong Solar Activity Continues (updated with h-alpha images from Mark Payne)
- Information Index – The Total Solar Eclipse of August 11th 1999.
- International SUNday 2016
- Mars Observations by John Knott, March – April 1997
- Pex Hill Visit of North East Astronomical Societies – 22nd August 1998
