The Low Frequency Array (LOFAR)

Number of operational stations 24 Core Stations 9 Remote Stations 8 International Stations Angular Resolution (Operational baselines, July 2012) a) Within the NL: North-south= ~83 km, ie, resolution 10 arc sec at 60 MHz East-West = ~21 km, ie, resolution 40 arcsec at 60 MHz b) Including international baselines North-South: ~1292 km, ie, resolution 0.65 arcsec at 60 MHz, 0.2 arcsec at 240 MHz East West : ~ 1004 km, ie, resolution 0.79 arcsec at 60 MHz, 0.26 arcsec at 240 MHz

Frequency Ranges LBA: 10-90 MHz (200 MHz clock) HBA: 110-190 MHz (200 MHz clock) HBA: 170-230 MHz (160 MHz clock) HBA: 210-250 MHz (200 MHz clock)

Low Band Antennas

High Band Antennas

Frequency response

The Square Kilometer Array (SKA)