Hi Sebastià,

As a partial workaround for the situation you describe,
I've added the following feature: if Guide is run with a
command-line argument such as

guide8 -oA265,75

then it will start up looking at azimuth 265, altitude
75 (near the zenith, a little south of due west). You can
combine this with adjusting the time; for example,

guide8 -t+1h -oA265,75

would tell Guide to show the sky as it would appear one
hour from "right now", looking at that same alt/az position.

But this doesn't address the other question you asked,
about having Guide be able to go to a particular fixed alt/az.
I'll have to get back to you on that one!

The various comments on this make me think that maybe
Guide ought to be working like this:

If you're in "alt/az" mode (zenith is at the top of the
screen, the horizon is level), then when you exit Guide
and later re-start the program, the alt/az should be left
unchanged. That is, if you shut the program down looking
a little bit above the southwestern horizon, the program
should start up looking at the same point above the horizon.
If an hour has gone by, the stars will be shifted by 15
degrees.

If you're in any other mode, including the default
"celestial coordinate" mode (celestial north is at the top
of the screen), things should continue to work as they do
now: when you exit Guide and re-start the program, it
should start up centered on the same RA/dec as before.

Unfortunately, this isn't as easy as it might sound.
I will give it some thought, once this update is solidified!

-- Bill