What delta T and sticking to UT
I am using Stellarium (0.10.5) on Macbook pro (OSX X 10.6.5) to look at planetary configurations in the past (1000 to 3000yrs before present) and would like to know how you are correcting for the slowing down in the rate of the earth's daily rotation. This is usually expressed as delta T = dynamical time - Universal time. (DT=2h 53 at around 1AD and shifts eclipse tracks by 43 degrees)
It would be very useful to have more control over the time setting. It seems that whatever longitude I use, the time is the local time at the longitude of my computer (Cambridge UK). This can be very confusing because it jumps from UTC to UTC+1 hour, when the day crosses into daylight saving time. It would be nice to be able to suppress this if required and stick to UTC (corrected for DT) or set to another local time corresponding to the longitude at which one has chosen to look at the sky.
Stellarium is superb!
Can you help with this problem?
Provide an answer of your own, or ask R catchpole for more information if necessary.