Regner T Thank you for your kind words. I appreciate that you do not have unlimited time at your disposal and it is not my wish to burden you. I also note that you have managed to respond to all posts on this subject (unless I missed one) suggesting a streak of thoroughness to your character! However I did post to you on 2007 Oct 13 (prior to your suggested framework for discussion) in a "Welcome to the forum" message in which I drew your attention to a submission of mine to this forum which can be found here -> //www.freelists.org/archives/geocentrism/09-2007/msg00298.html. It contains three propositions in excess of the five you requested but it does bear on the matter at hand. I mention this against the possibility that it may have escaped your attention. A side note -- I see from a post from Jack L that you appear to have an association with Stromolo in Canberra. I was posted there in the early 1970s and visited the observatory. That of course was before the disastrous fires of a few years ago. Have you been there since? I'd like to think it has been reinstated. Paul D Sick of deleting your inbox? Yahoo!7 Mail has free unlimited storage. http://au.docs.yahoo.com/mail/unlimitedstorage.html