Here is my first widget, for Mac’s Dashboard, VizWidget. It does one very simple thing: it searches VizieR for anything within 1 arc minute of the object or position entered. It returns 1 row of every catalog that has an entry. It calls the web browser to do this and does not display the data in the widget itself.

Download VizWidget (Macintosh OS 10.4.3 or greater)

Mac OS X 10.4 Tiger is required. If you’re using Safari, click the download link. When the widget download is complete, show Dashboard, click the Plus sign to display the Widget Bar and click the widget’s icon in the Widget Bar to open it. If you’re using a browser other than Safari, click the download link. When the widget download is complete, unarchive it and place it in /Library/Widgets/ in your home folder. show Dashboard, click the Plus sign to display the Widget Bar and click the widget’s icon in the Widget Bar to open it.