Zon Mosaic Pro5 Guide de l'utilisateur télécharger pdf (Page 62)

62 Starry Night User’s Guide

• Relative to screen centre: Your

indicator will be at a certain offset from

the screen centre. The offset is

determined by the values that you enter

for “Delta H” and “Delta V”. “Delta H”

is the horizontal offset and Delta V is

the vertical offset (both in pixels). An

indicator with an offset of (0,0) would

be directly at the centre of the screen.

• RA/Dec: This keeps your indicator

centred on a specific right ascension

and declination on the celestial sphere.

• Alt/Az: This keeps your indicator

centred on a specific altitude and

azimuth, relative to your local horizon

and direction.

Tip: If you want to centre your indicator

on a specific object or area of sky, right-

click (Ctrl-click on the Mac) on the object

or area of sky and choose Add FOV

Indicator from the contextual menu that

pops up. Choose an RA/Dec position or

Alt/Az position. The default co-ordinates

for this indicator will be centred on the

object or area of sky in question.

There are several cases where adding

specially positioned indicators might come

in handy. For example, assume you want

to create a star chart that shows you how to

“star-hop” from a bright deep space object

to a more obscure object. You could add

multiple indicators to your Starry Night

view (and printed chart), tracing out the

path that you would need to follow.

Deleting indicators: You can delete any of

your Field of View indicators by double-

clicking on the indicator’s name in the

FOV pane, then clicking the Delete button

in the dialog box that opens.

Heads-Up Display (HUD) Options

In “Identifying Objects In The Sky

” on

page 21, you learned that pointing the

cursor at an object onscreen causes Starry

Night to display the object’s name,

constellation and distance. This feature is

known as the Heads-Up Display (HUD).

You can change the look of the HUD and

also change the information fields that it

displays, by choosing Preferences from

the File menu (Windows) or the Starry

Night menu (Macintosh) and selecting

Cursor Tracking (HUD) from the

dropbox in the top left corner of the

Preferences dialog box.

You can set the HUD to display

information only when you are holding

down a certain key. This is useful if you

find that the HUD information appears too

frequently and gets in your way. You can

also avoid this problem by moving the

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