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Focal length:
(Camera name)
Spin Left      Spin Right
Center Frame
Show Pixels

   The first item simply toggles between showing and not showing the
frame.  Changing the "Angle" value lets you set the tilt of the
frame to any desired angle.  (The "Spin Left" and "Spin Right"
options each cause the frame to rotate a few degrees,  and may be
more helpful.)

   You can then select the focal length of your telescope,  and the
identity of your CCD camera.  A few points:  you can switch between
a focal length in millimeters and one in inches,  by using the
"Units" section of the "RA/dec Format" dialog box (described on page
30). Certain film format sizes,  including the ever-popular 35mm
frame, are given in the list.  As you change these parameters,  Guide
will update data on the angular dimensions of the frame and pixels.

   If you want the frame to stay always at the center of the screen, toggle
"Center Frame".  The rectangle will follow as you move around the sky.

   Set the 'show pixels' check-box,  and the grid of pixels will be shown
overlaid on the CCD frame.
                                                     
   There is a special hotkey for the purpose of moving the frame to a
new position.  Put the cursor at the desired location and hit Ctrl-F8.
If the frame is turned off, this will turn the frame on and re-draw
it, centered on the cursor. If the frame is already on, this will
simply recenter it.

7e:  The Legend Menu      

   The Legend menu in the Display menu controls what is shown in
the area at the lower left corner of the chart.  This legend is
also shown on the printed chart. You can reach the Legend menu
either by clicking on the Legend item in the Display menu,  or
by hitting Ctrl-L. It looks like this:

  Show Legend
Show Time
Time Zone
Lat/Lon
Caption
RA/Dec
Field Size
Object key
Mag Key
Compass
Sky Atlas 2000

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