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letters,  and zero to three digits,  such as 1989 AC or 1997 XF11.
Later, when the object has been observed often enough that its orbit is
well determined,  it is given its number and, usually,  a name.)  Enter
the provisional designation, and Guide will also recenter on that
asteroid.
                                          
   Bright open clusters have usually been given Messier, NGC, or IC
numbers. Others appear in catalogs like Collinder,  Tombaugh,  or
Berkeley. For a list of these catalogs click on the "Open Cluster"
menu item.  Select a catalog, type the number of the desired cluster
in that catalog, and Guide will recenter on that object.
                                 
   Globular clusters are huge collections of up to millions of stars,
packed into dense balls. They form a loose halo around our galaxy (and
around most other galaxies), and contain some of the oldest stars in
the universe. Examples are Messier 13, Omega Centauri, and 47
Tucanae.  Most have Messier, NGC, or IC numbers;  you can find the
rest (such as Palomar and Terzan objects) in the "Go To... Globular
Cluster" menu.
                          
   The "Constellation" option lists the 88 recognized constellations.  Click
on one,  and Guide will recenter on it.  You can also reach this using
the > hotkey,  or by clicking on the constellation abbreviation shown in
the legend area.
                                
   "Go to .TDF" is used to find objects in user-added datasets. (See
page 64.)  Click on this option and Guide lists currently installed
user datasets. Click on one and enter the name of an object in that
dataset. If Guide can find that object, it will recenter the chart on it.

5a:  Finding stars               

    The "Star" option in the "Go to" menu puts you in the following menu:

Bayer/Flamsteed
Yale (Bright Star)
SAO
PPM
HD
Guide Star Catalog
Common Name
Variable Star
NSV
Double Star
Supernova
DM (Durchmusterung)
Hipparcos
Nearby star

   In the "Bayer/Flamsteed" option you specify a star by its Bayer
letter or Flamsteed number.  Bayer letters (page 3) refer to
stars with a Greek letter followed by a constellation, for example:

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