Quoting Jim Palfreyman <[EMAIL PROTECTED]>, on Wed 23 Jul 2008 09:11:32 PM PDT:
> In response to Jim Lux's email I checked out the NASA tech brief. > > According to them to run a sidereal clock you should set the frequency to > 32,859.27577 Hz. > > Now the length of the sidereal day is 23:56:4.091 seconds. This is > 23.934469722 hours. That is, the sidereal clock must cover 24 "hours" on the > clock in 23.934469722 real hours. That is, it must run 24/23.934469722 times > as fast. Hence it's crystal needs to be at 32768*1.002737904=32,857.71563469 > Hz not the 32,859.27577 as stated. > > Interestingly if you multiply 32767*1.002737904 you get the above result. > > I think they have made a mistake. My guess is the author is very computer > literate and typed in 32767 without thinking! That author being me, you're probably right. I remember checking the Mars clock time against a variety of other sources over a few weeks, but I don't recall checking the sidereal time. Jim _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.