Posted by Nick Hudd at 08:17 on 2010 Nov 14
Thanks very much Steve. That is very useful and informative. I have been investigating this myself, and had discovered the Sky and Telescope site which has a great deal of handy data for observing. I have known about the site for ages but never explored it properly.I am not an experienced observer but my eyes tell me that eclipses and emergences take a noticeable time. My asking for the "best" prediction is largely down to having an enthusiastic "apprentice" (9), and making sure that (without saying what is going to happen) she gets the telescope for the relevant minute or two!! The eclipses and emergences particularly are an excellent demonstration, for a bright kid, of the relation of Jupiter, Sun, and Earth, and, indeed, of the relation of the satellites to each otherMany thanksNick