artflores32 wrote: > This is my first post in this Forum, requesting for help. > I noticed a fact that do not understand: > When, in Cartes du ciel, an object is right-clicked, the box "Identification" > appears, showing several parameters. > Among them, azimuth and culmination are given, for a certain date and time. > Now, if I use, as time for the chart, exactly the culmination time, I should > find for the azimuth a value of 0° or 180°; instead, I find approximately one > degree less, i.e. about 79° or 359°. > > There must be a reason for that, but I cannot figure which could it be. > Maybe an error in my observatory's coordinates? > > Many thanks and my best regards, > > Eduardo Flores > The only thing I can imagine is that the program might be computing the rise/culmination/set times using the unprecessed star coordinates. The effect does seem to change when you change the year by a large number such as 1,000 years.
Bud
