With older versions, you CAN use an external UVC cam as it's source *IF* you put the built in i Sight 'In Use' first.
Launch i Chat, open your Video Preview window to put the i Sight in-use. Simply Put: Your webcam may have a very very hi-res HD sensor.
One Apple compatible webcam effects and image adustment solution is a $20 app called i Glasses from
It also provides alot of webcam effects to play with.
Today, it supports Exo Mars/TGO, Mars Express and Gaia.
Part of its operating time is used by scientists in Argentina for radio science astronomy and research.
Old USB 1.1 ports-devices will only show "Speed: 12Mb/sec" as thier maximum bandwidth. Modern USB 2.0 high-resolution UVC webcams utterly overwhelm USB 1.1 ports which are more than FOURTY TIMES SLOWER.
Some cams won't display anything - or if they do you'll find your Frame-Rate is so abysmally low you'll just end up in sluggish, slow-motion frustration.
The outdoor webcam at the site of ESA's deep space tracking station, DSA 3, at Malargüe, Argentina, was switched on in May 2010 and brings you live updates from the station. The camera delivers a new image every 30 seconds, and the image below will be automatically refreshed.
The Malargüe station, Deep Space Antenna 3, is ESA's newest tracking station, 30 km south of the city of Malargüe, about 1200 km west of Buenos Aires, Argentina.