DashPhoon is a Mac OS X Dashboard widget that displays the phase of the Moon.
DashPhoon can either display the Moon as it appears now, or else at some other time. In the latter case, the display can be frozen at a particular time, adjusted by keystrokes, or advance rapidly by hours or days.
DashPhoon can display one of several labels with information about the phase of the Moon.
Clicking on the displayed label will advance to the next message in sequence.
The shadow intensity may be adjusted with the slider, or with the keys “+” and “−”.
DashPhoon was inspired by Jef Poskanzer's phoon, a program that displays the phase of the Moon as ASCII art.
The code that performs the astronomical calculations was derived (via phoon) from John Walker's moontool.
Photos and audio from NASA.
French translation by Ange Heureux. German translation with assistance from Joachim Korff of MACup magazine. Japanese translation by Christopher Li.
DashPhoon's displays are correct* for a hypothetical observer at the center of the Earth. (This is good, because if you are at the center of the Earth, you probably cannot see the Moon directly.) Depending on where you are on the surface, DashPhoon's picture of the Moon may differ by up to about two pixels in any direction from what you would actually see.
DashPhoon is not a substitute for going outside and looking up. Do not use DashPhoon as your sole source of information when planning space travel. Do not dance naked under a full DashPhoon.
* Displays may not be correct.
The latest version of DashPhoon can be found at DashboardWidgets.