Large arrays of widely separated radio telescopes can achieve very good resolution. What is the primary reason that such good resolutions cannot be achieved by individual radio telescopes operating independently?

0 votes
    Radio dishes have a metal mesh surface that lets some of the radio waves through the back of the telescope.
     Using many radio dishes provides the ability to image the object under question from many points of view simultaneously.
     Radio dishes cannot be built with perfectly smooth surfaces.
     Radio dishes are difficult to build larger than a few tens of meters across, limiting their individual resolutions to several times worse than the largest optical mirrors.
     The collecting area of several radio telescopes added together is much larger than that of a single radio telescope.
asked Sep 20, 2012 in Astronomy by anonymous
    

1 Answer

0 votes
Radio dishes are difficult to build larger than a few tens of meters across, limiting their individual resolutions to several times worse than the largest optical mirrors.
answered Sep 22, 2012 by SkyStar ~Expert~ (2,855 points)

Related questions




...