Paul. Many thanks for the link. I have now downloaded Cartes du Ciel and am amazed at the amount of information in it. What a terrific program. Much appreciated.
Dennis. I realize now that my description of the position of the moons didn't take into account that I wasn't using the erecting eyepiece so they would have been mirror-image. Dotty old girl that I am it took me ages to work out that out.
