with the assumption that he seems to be fine right after a sync, (seemingly supported in the OP) reconfiguring the windows time service to update frequently seems to me to be the easiest answer. under xp you can do so thus: http://support.microsoft.com/kb/314054
_eric On Thu, Jul 29, 2010 at 11:13 AM, Bob Camp <[email protected]> wrote: > Hi > > My observation is that the displayed clock on LH can be off by > 10 seconds. > That's with the current beta code and Windows 7 on a quad processor machine > or under XP on a dual core machine. > > Bob > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Brooke Clarke > Sent: Thursday, July 29, 2010 2:04 PM > To: Discussion of precise time and frequency measurement > Subject: [time-nuts] Can Lady Heather Keep Computer Clock On Time? > > Hi: > > I have a friend who's setting up an observatory and the PC that controls > the telescope needs to have an accurate clock. > The telescope can point to within arc seconds of a star and that implies > that the computer clock needs to be within 50 ms. > If he does a Windows NTP sync first thing in the evening after a few > hours there's too big an error. Running the observatory is like flying > a 747, i.e. there's a lot to do and the time needs to be handled > automatically, not by manual NTP updates. > > I know that TAC32 and a Motorola GPS will do this and you have a lot of > options of how it does it. For example at a specified time interval or > when the computer clock differs from GPS by a specified amount of time > (50 ms in this case). > > What are the options in LH? I ask because it's a lower cost option then > the Motorola GPS plus TAC32 option or building a NTP time server. > > -- > Have Fun, > > Brooke Clarke > http://www.PRC68.com > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- --Eric _________________________________________ Eric Garner _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
