spacechart(1)

NAME

spacechart - display 3d star maps

SYNOPSIS

spacechart

DESCRIPTION

This manual page documents briefly the spacechart and This

manual page was written for the Debian GNU/Linux distribution be

cause the original program does not have a manual page.

spacechart can be used to display maps of the stars in 3D

and rotate them. It is capable of showing only a subset of the

stars in a given data file, and only those within a given dis

tance of the center of the display. Also, it shows lines between

stars that are closer than a given distance.

Open a data file with the 'File/Open' menu item of the

'Open' toolbar menu. A map of the stars in the data file should

appear in the main window. You can rotate it by moving the mouse

across it with the right button pressed.

The 'View Radius' scrollbar allows you to select which is

the maximum distance from the center star you want to see. The

'Zoom' scrollbar magnifies the center of the image.

The "User Coords" are the ecliptic latitude and longitude

of the observer, and a "North" parameter that indicates which way

of the screen is north. So, if the "north" field is 0, north is

towards the top of the screen, and if it is 180, it's towards the

bottom. If you change the user coordinates by hand, you will

probably use only "round" values of "north".

If you click on a star a dialog will pop up showing the

info about that star system. This dialog allows you to center the

display on that star.

The 'Max Link Shown' field select the maximum size for

which links between the stars will be shown. How these links are

drawn can be selected in the 'Links' page of the settings.

The star selection dialog allows you to select a subset of

the stars to be shown according to their luminosity, spectral

class and multiplicity.

OPTIONS

This program follows the usual GNU command line syntax,

with long options starting with two dashes (`-').

AUTHOR

This manual page was written by Javier Fernandez-Sanguino

Pen~a <jfs@computer.org>, using the README files provided by the

upstream author, for the Debian GNU/Linux system (but may be used

by others).

march 13, 2001

SPACECHART(1)