Version 0.12.0 and Delta T

Detailed info about Delta T you can read in Wikipedia: http://en.wikipedia.org/wiki/Delta_T

In a nutshell Delta T should improved prediction and visualization of eclipses.

Opportunity disable Delta T correction will be implemented in next version - 0.12.1.

If you disable DeltaT, what you see on screen does not represent what you observe outdoors. The more you depart from the year 1900, the more important this gets. It's pretty well known for a few hundred years, then models disagree for antiquity, and esp. Mesopotamists require this correction to date observations recorded on Cuneiform tablets which often are fragments only.

Maybe we should have several models from the literature selectable, and a possibility to play with a constant value (which may be 0), and also the n' lunar acceleration value.

The current implementation appears to finally work for solar eclipses (I checked in 4th ct and 18th century BC), and is a major improvement!

But yes, OOPS, indeed, the time displayed in the bottom line and also the time panel should show UT or Zone Time, not TD, if in real-time mode.

G.

Alexander,

I read the wikipedia entry on Delta T and I understand its importance regarding the proper display of the sky.

gzotti,

Thank you for your reply - very interesting information. I agree with you, the bottom line and the time panel should show UT or the computer time (Zone Time) and NOT the Delta T time.

Paul.