Comment 3 for bug 1652762

Hmm, I think there is a misunderstanding what should be displayed here:

We have 2 algorithms for the planets, ELP2000 (with nDot=-23.8946) or DE43x (-25.8). If we select some DeltaT algorithm on the Navigation tab of the config panel, then some (usually different) nDot (which belongs to the DeltaT algorithm) is activated. This is the value that should be displayed at this location. I changed this in revision 9031, together with (hopefully) a small optimisation.

It is interesting to observe: Changing to DE431 around -2000 now keeps the moon in (practically) the same position for equal UT, and DeltaT is different by about 40 minutes. This seems to show the positional closeness of DE431 and VSOP/ELP when the nDot compensation is working, right? (I mean, the numerical value of DeltaT is secondary. It is rather LunarPosition(UT) that counts here. Must still compare positions with old eclipse reports...)