NavList:

Homer S., you wrote:

"I read with interest your post about clearing lunars. I took Frank's lunar class in early Aug as well. It was the third time for me. You seem to have come to an understanding of lunars a lot quicker than I did."

You're doing fine, Homer. You and Bob Bossert are coming at this from rather different directions :). His navigational triangle diagram in his last post, for example, had nothing to do with lunars specifically, and it represents a quite common-place scenario in celestial navigation [there's a notable flaw in the diagram --a mis-labeling... can you spot it, Homer?]. Regardless of its relevance to lunars, I assume it gave him pleasure to produce it, and that's what counts, right?

You added:

"I use Stellarium for my altitudes. It seems to be very accurate, flexible and easy to use. In the topocentroc mode there is no I.C. and HOE is zero. Altitudes ("apparent", if the atmosphere is present) of bodies are from their center so you don't have to work with SD's ( the moon's SD is augmented as far as I can determine). If you do need to know the SD of a body (e.g.to get the pre-cleared LD), just left-click on it and find its listed diameter and divide it by 2."

Yes, Stellarium is a good choice for this. From your comment here, I'm wondering if you got the celestial navigation plugion working? On the plugins menu, it's listed as "Navigational Stars". When you get it activated, you also need to toggle the setting that says "show additional info from plugins" (something like that!). This adds some interesting detail for navigation calculations that you would find enjoyable.

Frank Reed