Real-time mode
Bill J Gray Nov 12, 2002
Hi Robert,
The way to do this is through the 'real time' option in the
Animation dialog. You click on the "real time" check-box, and
Guide asks you for the frequency at which the screen should be
updated.
If I'm following a fast-moving satellite, I may need a
screen update once a second. I can then step outside,
look through the window at my PC screen, and see that the
satellite in question is now zipping past Vega. Look up,
perhaps use binoculars, and... there it is. (You can see
a lot of satellites in a night doing this, by the way.)
Obviously, most objects move a lot slower than that,
and once every 60 seconds is plenty. In the latter case,
whenever Guide notices that Guide's time is off by 60
seconds, it'll force an update to the screen, and you'll
see satellites, planets, etc. move a bit.
If you've not played with animation before, you may
want to take a look at chapter 15 of the manual. It
describes such nuances as the difference between "moving
target" mode (Guide recenters on a given object, so you
can "follow" an object such as a satellite as it moves
across the sky), "horizon" mode (at each update, Guide
stays at the same point relative to the horizon, with
stars drifting through your field of view, sort of like
a telescope with the drive shut off) and "proper motion"
(same thing, with the scope's drive turned on, so you
stay centered at the same RA/dec.)
-- Bill