Thanks, Luc,

That solution works for keeping the stars still while the comet moves. I have successfully made a couple of videos doing that.

To Bill:

Could you consider (as an update or in a new version) the option to slow down animation movies? Luc's solution was very helpful, but I would really like to be able to show the comet in relation to the local horizon. Perhaps an adjustable frame rate of 1 step per second rather than 1/30 sec per step. This would allow me to keep the horizon line in the movie (using each step as 1 rotational period) and still slow it down enough so that the eye can easily track the moving objects.

Thanks if you can do it.

Roger in Jacksonville, FL

--- In guide-user@yahoogroups.com, "Luc Desamore" <luc_desamore@...> wrote:
>
> Hi Roger,
>
> Display Inversion Menu select RA/Dec
> Goto Comet Ison and select it with right mouse button and click OK
> Menu Animation Animation Dialog and select stars
> Choose the time needed and press play
>
> Luc
>
>
>
>
>
>
>
> ----- Original Message -----
> From: "rcurryjaxfl" <roger.curry@...>
> To: <guide-user@yahoogroups.com>
> Sent: Sunday, 21 July, 2013 05:02
> Subject: [guide-user] Request help with making a movie
>
>
> >I am trying to make a movie showing the movement of comet Ison against the
> >background stars during the coming apparition.
> >
> > I would like to show the stars still and the comet moving among them. The
> > only way I know how to do this is to set the interval for Earth's
> > rotational period of 23h 56m 4s (close to that, anyway). When I do that
> > the comet moves too quickly through the animation.
> >
> > Is there a way to shorten the interval and not rotate the sky over the
> > interval period? Perhaps there is a way to add extra frames to the
> > animation between the intervals to slow it down?
> >
> > Thanks in advance.
> >
> > Roger in Jacksonville, FL
> >
> >
> >
> > ------------------------------------
> >
> > To unsubscribe from this group, send an empty email to:
> > guide-user-unsubscribe@...! Groups Links
> >
> >
> >
>