User`s guide

40 Starry Night User’s Guide
Database Label Options: You have great
control over how labels appear in Starry
Night. You can change, the size, colour,
font and number of labels for each
database. See “Label Options
” on page 52
for more information.
Celestial Object Display Options
As mentioned in “Displaying Celestial
Objects” on page 38, clicking on a
database name in the Options pane will
open a dialog box with display options for
that database. The options fall into two
categories: options for displaying the
objects in the database, and options for
displaying the labels for these objects.
This section focuses on the options for
displaying the objects, while
“Label Options
” on page 52 will look at
label options.
Tip: You can also access database options
by choosing Options from the main menu
and selecting the appropriate database.
Some display options are common to all
object databases, while some are specific
to certain databases.
Most (but not all) databases have these
three options:
Number of objects: This slider controls
how many objects from this database are
displayed onscreen. Moving the slider to
the right will display more objects.
Constrain: If this box is checked, only
objects that fall within the
apparent
magnitude
range that you specify will be
displayed onscreen. For example, if you
live in a city, and your naked eye
limiting
magnitude
is around 4.00, you could use
this function so that Starry Night displays
all stars whose magnitudes are between -2
and 4. That way, what you see on the
computer screen will be similar to what
you actually see while observing from
your urban location.
You may also want to use this control to
simulate your telescope view on a given
night. If you know the magnitude of the