Cosmic microwave background question.

[jaydnul]

So to detect the EM waves from this background, did the device that measured it focus on one single point in the sky, kinda like hubble, or did it do a full panoramic spherical measurement of the whole sky around it?

 

[mathman]

http://en.wikipedia.org/wiki/Cosmic_microwave_background_radiation

The above includes a history of the measurements.