Stellar Magnitudes

Stellar Magnitudes

Button controls

Bouton d'aide
Help button: This button will open a window with help information.
Contrôles à bascule
Increase magnitude: this button will increase magnitude of the star shown.
Contrôles à bascule
Decrease magnitude: this button will decrease magnitude of the star shown.

Using the applet

This applet has been designed to give a visual representation of the magnitude scale. Stars with lower magnitudes are brighter than stars with higher magnitudes. As magnitudes get increasingly larger, the brightness of the star gets significantly dimmer. The greater the difference between their magnitudes, the larger the brightness ratio of the stars. The small light bulbs help to give the impression of brightness, and change in brightness with a change in magnitude.

As shown, the size of the star represents the apparent brightness. The yellow circle depicts a star of first magnitude.

Download the Flash Applet