On Tue, 26 Feb 2013 10:43:02 -0500, Davoud wrote:
XEphem, the premier UNIX/Linux (and Windows/Cygwin) research
program:


FYI, XEphem runs natively in the Mac OS (BSD UNIX).

No nere ro point that out, the text above said UNIX, didn't it?

It requires an
X-Windows environment such as Apple's X-11, which is standard with
OS
10.7 and below. Beginning with 10.8 one must download and install

So Xephem runs natively on older versions of Mac-OS, butik the
current Mac-OS needs some extras to run Xephem....