Georg, Thank you so much for your very informative reply. This helps me quite a bit. Now my imagination is running wild!
Thanks, John On Jun 3, 2011, at 11:07 AM, Georg Zotti wrote: > Dear John! > > If 35 Mya = "35 million years ago", I am afraid there is no software in > the world to help you (and nobody to check it :-) That's about a seventh > of the rotational period of the sun around the galaxy's center! > > The computational basics for the planet positions used in Stellarium and > most other such programs can be trusted for a few millennia only. > Actually, the -99999 is already waaay tooo optimistic, I would not trust > it before about 6000BC (I cannot quote its published limits at the > moment). Not much exists on accurate planet positions etc. before 10000BC, > which surely is a pity. > > For the stars, we can meaningfully extrapolate proper motions for a few > tens of thousands of years, so the limit seems to be meaningful to show > the stars at least approximately where they have been. For those long > times, however, take any random distribution. You will not recognize a > single constellation. > > Best regards, > Georg > > > On Fr, 3.06.2011, 18:10, John Powell wrote: >> Hello. >> >> I am putting an astronomy presentation together for the National Park >> Service in the US. I need to see what the night sky looked like 35 Mya. >> This wonderful app let me go back to -99999. Is there a way to go >> further? Help me Obi-Wan Stellarium, you're my only hope. >> >> Thanks, >> John >> > > > ------------------------------------------------------------------------------ > Simplify data backup and recovery for your virtual environment with vRanger. > Installation's a snap, and flexible recovery options mean your data is safe, > secure and there when you need it. Discover what all the cheering's about. > Get your free trial download today. > http://p.sf.net/sfu/quest-dev2dev2 > _______________________________________________ > Stellarium-pubdevel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/stellarium-pubdevel > ------------------------------------------------------------------------------ Simplify data backup and recovery for your virtual environment with vRanger. Installation's a snap, and flexible recovery options mean your data is safe, secure and there when you need it. Discover what all the cheering's about. Get your free trial download today. http://p.sf.net/sfu/quest-dev2dev2 _______________________________________________ Stellarium-pubdevel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/stellarium-pubdevel
