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have done this in order to get a "horizon" that matches their actual
observing site.  This helps in planning observations (you can get a
better idea when the moon will rise from behind a certain hill) and
in orienting yourself properly.  (Unfortunately, figuring out the
azimuth to the objects in question can be a bit of a challenge.  You
can use a compass, or you can observe a star pass over an object at
a given time, then use Guide to determine the altitude/azimuth of
the star at that time.)

   By default,  the background is white in Chart mode and black in
Normal Color mode,  and the ground is a brownish-red color.  However,
three buttons are provided in the dialog box to adjust this. Each is a
blank rectangle showing the color in question;  click on one,  and you
get a color selection box.

8:  SETTINGS MENU                          

   The Settings menu lets you set such details as your position on
the earth (latitude, longitude and altitude),  epoch,  printer, and so
forth.

   The Settings menu looks something like this:

Location
Time Menu
Level 3: 45 degrees
Scope control
Level
Language
Margins menu
RA/dec format
TLE=bright.tle
Projection
Toolbar

   In the Location dialog (page 32),  you can select your
observing viewpoint,  so you can get data based on your actual
position on the earth.

   In the Time menu (page 42) you reset the time which Guide uses
for calculating planet positions,  rise/set times, and altitude and
azimuth of stars.
                                               
   The next item gives you some control over the field of view shown
at a given level.  Suppose you're at level 9,  where the field of view
is normally 30 arcminutes. For some reason you would prefer a slightly
smaller field of view, say, about 24 arcminutes. At level 9, click on
this menu item.  You are asked to "Enter new level size:"; enter 24'
(or .4, as in .4 degrees, or 1440",  as in 24 times 60 arcseconds).
The size of level 9 would henceforth be 24',  not the default 30'.
(If you just want a simple way to get fields of view other than those

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