Cartes du Ciel question

[dmahon]

Regarding JNOW and J2000 - which most software gives you the option of setting. I want to set all my software the same.

CdC gives you 4 options, two of which sound like JNOW and two like J2000.

Which is equal to or closest to the JNOW and J2000 as supported by other programs?

[Bizibilder]

Documentation is here:  http://www.ap-i.net/skychart/en/documentation/chart_coordinates#chart_coordinates  although it may not answer your question completely!