NavList:

Hello, Paul!

You wrote: "My program (..) also has a "center of light" option. But in this case, Venus phase angle is 58°, so I don't think there's much error if observe Venus center and ignore phase. The easy way is to select "center" for the Venus distance limb (in the program main window). Then the output omits a correction for Venus SD".

I somehow had missed these (and some other) options in Lunar4.4 program. I thought that center of light, far/near/center options work only if the altitudes are entered. It turns out that my assumtions were wrong. That's Great!

I would like to ask a question: How do you evaluate the accuracy of the results from your Lunar4.4 program? For example +/-0,1'; +/-0,05' or maybe +/-0,01'?

Modris Fersters