Technical Specifications of the Very Small Array
Overview | |
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Location | Teide Observatory, Tenerife |
Type | 14-element |
Scanning | Tracking by antennas co-mounted on tip-table. Horns rotate E-W. |
Pointing range | Hour Angle: ± 3 hrs
Declination: -7 to +63 |
Antennas | Corrugated horn feeding 90 degree-offset paraboloidal mirror |
Receivers | NRAO design pseudomorphic HFETs cooled to 15K with Noise temp 25K |
Frequency | 31 GHz ± 5 GHz |
Bandwidth | 1.5 GHz |
1st LO | 20-30 GHz |
2nd LO | 9.0 GHz (fixed) |
Baselines | 91 |
Correlator | 182 analogue phase-switched channels + 4 Source Subtractor |
Compact Array | |
Primary beam | 4.5º |
Resolution | 30 arcminutes |
l-range | 100 - 800 |
Sensitivity | 25 mJy in 300 hrs |
Extended Array | |
Primary beam | 2.0º |
Resolution | 12 arcminutes |
l-range | 250 - 1500 |
Sensitivity | 5 mJy in 300 hrs |