2.3 GHz Spectroscopy with the 26m telescope at HartRAO

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2.3 GHz / 13 cm Spectroscopy with the 26m telescope

**Table 1. 2.3 GHz / 13 cm Receiver characteristics. PSS for each sense of polarised radiation.**
Receiver type	dual cryogenic HEMTs
Polarization	LCP+RCP
RF filter	2258-2344 MHz
Zenith System Temperature	36 K
Point Source Sensitivity	4.8 Jy/K/Pol
System Equivalent Flux Density	410 Jy
Half Power Beamwidth	0.332 degrees

**Table 2. Lines observable at 2.3 GHz**
Spectral Line	Rest Frequency (MHz)
H141alpha	2321.187
H142alpha	2272.662

**Table 3. Velocity range, spectral resolution with 1024 channels, and minimum rms noise after 1 minute integration, for the given correlator bandwidth at 2321 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	4136.1	4.039	0.036	0.18
16.000	2068.1	2.020	0.051	0.25
8.000	1034.0	1.010	0.072	0.35
4.000	517.0	0.505	0.102	0.50
2.000	258.5	0.252	0.144	0.70
1.000	129.2	0.126	0.204	1.00
0.500	64.6	0.063	0.289	1.40
0.250	32.3	0.031	0.408	1.98
0.125	16.2	0.016	0.577	2.80