# Mouse and Keyboard Controls Used for Navigation in Celestia
## Mouse Functions

Celestia works best with a three-button wheel-mouse. Very inexpensive ones are available which work well with Linux, Mac and Windows computers.
Left drag: Orient the view.
Right drag: Orbit the selected object.
Wheel: Adjust the distance to your current selection.
Right + Left drag: Adjust your distance to the selection.
Ctrl + Left drag: Adjust your distance to the selection.
Shift + Left drag: Changes your field of view (e.g. => Telescopic view.)
Wheel click: Toggles the field of view between 45 degrees and the previous field of view.
Left click: Select the object you click on.
Left double click: Center the selection.
Right click: Brings up the context menu.

## Keyboard Navigation Commands

H : Select the sun. (Home.)
C : Center on the currently selected object.
G : Go to the currently selected object.
F : Follow the selected object.
Y : Orbit the selected object at a rate synchronized to its rotation.
: : Lock on the selected object.
" : Chase the selected object. (The orientation is based on the selected object's velocity.)
T : Track the currently selected object. (Keep the selected object centered in the view.)
HOME : Move closer to the currently selected object.
* : Look back. Causes the view to shift from objects forward in the direction of motion, to objects rearward.
END : Move farther from the selected object.
ESC : Cancel the currently executing motion or script.
Shift+C : Center/orbit. (Center the selected object without changing the position of the reference object.)
Left : Move (or roll) the camera view left.
Right: Move (or roll) the camera view right.
Up : Move (or pitch) the camera view up.
Down : Move (or pitch) the camera view down.
Shift+ Arrow: Orbit the currently selected object in the direction indicated by the arrow selected.
1-9 : Select any of the planets orbiting our Sun. (2=Venus, 4=Mars, etc.)
ENTER : Select a star or planet by typing its name.
Ctrl+C, or Ctrl+INS : Copy location URL to your clipboard.

## Time Control

Spacebar : Pause/Resume the flow of time and scripts (toggle)
J : Reverse/Forward time (toggle)
\ : Set time rate: 1x forward (norm), cancels faster/slower x factors
L : Change time rate : 10x faster
K : Change time rate : 10x slower
Shift+L : Change time rate: 2x faster
Shift+K : Change time rate: 2x slower
! : Set time to current system date and time
? : Display light-travel delay between ovserver / selected object
- (hyphen) : Subtract light-travel delay from current simulation time

## Labels (on/off Toggles)

E : Galaxies
Shift+E : Globulars
B : Stars
P : Planets
Shift+P : Dwarf Planets
M : Moons
Shift+M : Minor Moons
W : Asteroids
N : Spacecraft
= : Constellations
& : Locations

## Render/Display (on/off Toggles)

U : Galaxies
Shift+U : Globulars
^ : Nebulae
Ctrl+A : Atmospheres
I : Clouds
Ctrl+L : Night side maps
Ctrl+T : Comet Tails
Ctrl+E : Eclipse Shadows
Ctrl+B : Constellations bounaries
/ : Constellation diagrams
; : Earth-based equatorial coordinate sphere
Ctrl+K : Markers (placed on objects)
O : Orbits (toggle ALL selected orbits)

## Render Options

{ : Decrease Ambient Light
} : Increase Ambient Light
( : Decrease Galaxy Light Gain
) : Increase Galaxy Light Gain
[ : Decrease Magnitude Limit :
] : Increase Magnitude Limit :
Ctrl+Y : Toggle Auto Magnitude (auto adaptation of start visibility of FOV)
, : Narrow Field of View [Shift+Left Drag]
. : Widen Field of View [Shift+Left Drag]
Ctrl+X : Toggle Antialias lines
Alt+Enter : Toggle Display mode (Full-Screen / Windowed)
Ctrl+P : Mark selected object
+ : Toggle Planet Texture type (Artisitic / Limit of Knowledge)
% : Star color table toggle (classic / Blackbody D65)
Ctrl+S : Cycle the Star Style (points / fuzzy discs / scaled discs)
V : Cycle the Info text verbosity (None / Terse / Verbose)
Ctrl+W : Toggle Wireframe mode

## Spaceflight

F1 : Stop.
F2 : Set velocity to 1 km/s.
F3 : Set velocity to 1,000 km/s.
F4 : Set velocity to speed of light.
F5 : Set velocity to 10x the speed of light.
F6 : Set velocity to 1 AU/s.
F7 : Set velocity to 1 ly/s.
A : Increase velocity.
Z : Decrease velocity.
Q : Reverse direction.
X : Set movement direction toward center of screen.

## Number pad

4 : Yaw left.
6 : Yaw right.
8 : Pitch down.
2 : Pitch up.
7 : Roll left.
9 : Roll right.
5 : Stop rotation.

## Joystick Controls

X axis : Yaw.
Y axis : Pitch.
L trigger : Roll left.
R trigger : Roll right.
Button 1 : Slower.
Button 2 : Faster.