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6.0 GHz / 5 cm Spectroscopy with the 26m telescope

Table 1. 6.0 GHz / 5 cm Receiver characteristics. PSS for each sense of polarized radiation.
Receiver type dual cryogenic HEMTs
Polarization LCP+RCP
RF filter 6008-6052 MHz
Zenith System Temperature 57 K
Point Source Sensitivity 5.1 Jy/K/Pol
System Equivalent Flux Density 700 Jy
Half Power Beamwidth 0.125 degrees

Table 2. Lines observable at 6.0 GHz
Spectral Line Rest Frequency (MHz)
hydroxyl 6049.084
hydroxyl 6035.092
hydroxyl 6030.747
hydroxyl 6016.746

Table 3. Velocity range, spectral resolution with 1024 channels, and minimum rms noise after 1 minute integration, for the given correlator bandwidth, for each sense of polarized radiation, at 6035 MHz.
Correlator Velocity Correlator RMS Noise RMS Noise
Bandwidth Range Resolution in 1 min in 1 min
MHz km/s km/s K Jy
32.000 1590.7 1.553 0.036 0.25
16.000 795.4 0.777 0.051 0.35
8.000 397.7 0.388 0.072 0.50
4.000 198.8 0.194 0.102 0.70
2.000 99.4 0.097 0.144 1.00
1.000 49.7 0.048 0.204 1.41
0.500 24.9 0.024 0.289 2.00
0.250 12.4 0.012 0.408 2.82
0.125 6.2 0.006 0.577 4.00