I think Patrick mentioned a few months ago that v3 would allow you to choose the epoch, or use the current epoch.
At least until recently, it was standard on charts to use a fixed and basically standardized epoch (I remember epoch 1950 charts when I was a kid). With computers, that idea may fall by the wayside... -John --- Robert Sheaffer <[EMAIL PROTECTED]> wrote: > > I have noticed that when RTGUI sends CdC a position for charting an > object, it usually looks a "little off". However, the RA and DEC being > sent over are correct. RTGUI automatically performs precession > calculations, so the epoch being sent over is 2006. > > Experimenting with using a fixed epoch, when the position sent over is > Epoch 2000, the chart looks "exact". The object is quite centered. > > Does CdC always use Epoch 2000 for charting? I don't see any options > for doing otherwise. So programs that create charts need to precess > everything to J2000 for best accuracy? > > One more question: will this be the same when Ver. 3 is released? > Should I make conversion to J2000 permanent when RTGUI sends over > positions to CdC? > > Robert Sheaffer > > > > > > > > Yahoo! Groups Links > > > > > > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/skychart-discussion/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
