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8.5 GHz / 3.5 cm Spectroscopy with the 26m telescope

Table 1. 8.5 GHz / 3.5 cm Receiver characteristics. PSS for each sense of polarized radiation.
Receiver type dual cryogenic HEMTs
Polarization LCP+RCP
RF range 8180-8980 MHz
Zenith System Temperature 50 K
Point Source Sensitivity 6.1 Jy/K/Pol
System equivalent flux density 630 Jy
half power beamwidth 0.092 degrees

Table 2. Lines observable in 8.5 GHz / 3.5 cm band
Spectral Line Rest Frequency (MHz)
H91alpha8584.824
H90alpha8872.571

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 8580 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 1118.9 1.093 0.059 0.50
16.000 559.4 0.546 0.083 0.70
8.000 279.7 0.273 0.117 1.00
4.000 139.9 0.137 0.166 1.41
2.000 69.9 0.068 0.234 2.00
1.000 35.0 0.034 0.332 2.82
0.500 17.5 0.017 0.469 4.00
0.250 8.7 0.008 0.663 5.64
0.125 4.4 0.004 0.938 7.97