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LWA1 Specification Summary


The table below lists the specifications of the LWA1 (the first LWA station).

Specification

Details

Comment

Number of stands

257

One outrigger antenna at 300m baseline

Frequency coverage ν

10-88 MHz

 

Number of beams

4

Number of tunings

2 per beam

 

Number of polarizations, Npol

2 per beam per tuning

 

Bandwidth per beam, B

19.6 MHz max

16 MHz usable due to band edges

Declination range

-30° to 90°

 

All sky transient mode TBN

1-67 kHz bandwidth

Continuous observing all dipoles

All sky transient mode TBW

78 MHz bandwidth

Periodic bursts observing all dipoles

Spectrometer

32 channels

Minimum channel width 7.8125 kHz

SEFD

3 kJy

At zenith

Sensitivity Smin

5 Jy

5 sigma, 1 sec, 16MHz, zenith

Confusion noise (zenith)1

25 Jy/beam

for a 2° beam at 74 MHz, only theoretical estimate

 

1 The confusion limit will be reached in about 1 msec using 8 MHz bandwidth. Longer integrations can be achieved for narrower bandwidths.