John Rogers Profile Topics Started Replies Created Engagements Favourites Search topics: Topics Engaged In Viewing 3 topics - 1 through 3 (of 3 total) Topic Voices Posts Last Post Where do the observations go? Started by: David Scanlan, FRAS in: General Discussion 9 9 4 years, 5 months ago Richard McKim Minimum aperture for seeing GRS? Started by: John Rogers in: Jupiter 3 4 4 years, 6 months ago Paul G. Abel Clustered flaring satellites (not Iridium) Started by: John Rogers in: General Discussion 3 6 5 years, 1 month ago John Rogers Viewing 3 topics - 1 through 3 (of 3 total)