Mark V Nov 9, 2010
--- In guide-user@yahoogroups.com, "Elliott, Robert C." <elliottb@...> wrote:
>
> Hi Mark and all.
> I am in the habit of hitting the F3 key just before I ask Guide to slew the telescope. That way I get an update on the objects Alt and Azimuth as well as other information so I know that the telescope will not hit the dome etc.
>
> Bob
>
>
> ________________________________________
> From: guide-user@yahoogroups.com [guide-user@yahoogroups.com] on behalf of Mark V [mva@...]
> Sent: Tuesday, November 02, 2010 09:43
> To: guide-user@yahoogroups.com
> Subject: [guide-user] Re: Guide8 & EQMOD
>
> Thanks for the replies, Bob and Bill.
>
> What you state below makes sense, Bill. I suppose even an
> hourly update (via F3 as Bob mentioned) or via the Animation
> dialog would suffice.
>
> I guess the true test will come when I can get set up under
> the stars for a number of hours.
>
> Mark V
>
> --- In guide-user@yahoogroups.com, Bill J Gray <pluto@> wrote:
> >
> > Hi Mark,
> >
> > There are a couple of solutions. As Bob Elliott pointed out,
> > hitting F3 will do the job. Or you can run animation in "real
> > time" mode, with a reasonably frequent update rate.
> >
> > _Or_, I strongly suspect, you can ignore the entire issue.
> > Guide will send RA/decs to the scope. The RA/dec of stars and
> > galaxies is (to the level of accuracy of the scope *) independent
> > of time and location on the earth.
> >
> > If you're looking at a much nearer object, and didn't have
> > the time/date or your latitude/longitude set correctly, then
> > Guide might compute an RA/dec for that object which doesn't
> > correspond to reality. For the Moon, for example, if you
> > set Guide to show the universe from the opposite side of the
> > earth, you might have a two-degree error. Guide would send
> > the wrong RA/dec to the scope, and you'd be out of luck.
> >
> > For an artificial satellite, the time should be dead on.
> > But for almost everything else, ballpark accuracy of a few
> > minutes in time and a few degrees on the earth's surface ought
> > to get the scope where it's supposed to go.
> >
> > -- Bill
> >
> > (*) If you had Guide set to the year 1000 or 3000, then
> > stars would be off because a thousand years of proper motion
> > was thrown into the mix. Arcturus would be almost a degree off;
> > most fainter stars, less so. Just make sure you haven't been
> > simulating an ancient eclipse or something just before you
> > hook up the scope.
> >
>
>
>
>
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