Long Wavelength Array, Figure 1 (IMAGE) Naval Research Laboratory Caption Photograph of the 16-element LWDA, with a National Radio Astronomy Observatory Very Large Array (VLA) dish visible in the background. For scale, the individual LWDA antennas are a bit less than 4 feet tall and the largest separation between antennas in the array is about 70 feet. The telescope operates as a "phased array," in which the signals from each of the antennas are combined electronically (requiring no moving parts) such that the beam can point in a new direction or change observing frequency extremely quickly. Credit Naval Research Laboratory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.