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Table 2
GEM 2.3GHz survey.
| Description | Colombia | Brazil |
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|
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| Observational site | Villa de Leyva | Cachoeira Paulista |
| Longitude (WGS84) | −73°35′0.53″ | −44°59′54.34′ |
| Latitude (WGS84) | +5°37′7.84″ | −22°41′0.74″ |
| Altitude (m.a.s.l.) | 2173 | 572 |
| Observing runs | 1995-Jun-1–18 | 1999-May-18–Jun-17 |
| 1999-Oct-11–26 | ||
| Antenna mounting | altazimuthal | altazimuthal |
| Azimuth scanning speed (rpm) | 0.99632 ± 0.00036 | 1.00290 ± 0.00063 |
| Sky coverage (%) | 46.3 | 46.8 |
| Pointing accuracy | ||
| Center frequency (MHz) | 2300 | 2300 |
| Pre-detection BW (MHz) | 100 | 100 |
| Gain (K V-1) | 54.675 | 50.928 |
| Gain susceptability (K-1) | −0.02381 ± 0.00028 | −0.02164 ± 0.00006 |
| System temperature (K) | 85.466 | 61.644 |
| RMS sensitivity (mK) | 11.42 | 8.24 |
| RF plate Tcal (K) | 310.572 | 308.031 |
| Horizontal HPBW (°) | 2.30 ± 0.13 | 2.31 ± 0.03 |
| Vertical HPBW (°) | 1.92 ± 0.18 | 1.82 ± 0.12 |
| Beam efficiency (%) | 75.0 ± 3.5 | 75.0 ± 3.5 |
| Aperture efficiency (%) | 38.0 | 39.9 |
| PSS (Jy K-1) | 306 | 291 |
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