Free Access
Table 2
GEM 2.3GHz survey.
Description | Colombia | Brazil |
|
||
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 |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.