6.5mm primary focus receiver (40-50 GHz)
This receiver was build for spectroscopic observations. Its frequency range is divided into two channels (41-45 GHz, 45-50 GHz), each with a separate (linearly polarized) feed horn.

Frequency [GHz] Channel Polarisation Tcal [K] Tsys [K] Sensitivity [K/Jy] SEFD [Jy] Aperture Eff. [%] TMB/S [K/Jy] Main Beam Eff. [%] FWHM [arcsec] Last update
41.5
 A
 linear
 11.0
 170
 0.61
 280
 36
 1.3
 47
 23.4
 Feb 2008
44.0 A linear 9.0 153 0.43 358
 25
 1.3 33 22.0 Feb 2008
48.0
 B
 linear
 7.0
 135
 0.28
 498
 17
 1.3
 22
 20.5
 Feb 2008
49.0
 B
 linear
 5.0
 127
 0.25
 508
 13
 1.4
 17
 19.0
 Feb 2008

normalized Gain curve     (G = A0 + A1·Elv + A2·Elv2) Observed in
A0 =  0.68500      A1 =  1.7763E-2      A2 =  -2.4878E-4 Feb 2008

Comments:
  • Gain curves are opacity corrected. Opacity was tau=0.12 during the observations. Values between 0.12 and 0.15 should be typical for good weather conditions at this frequency.

For additional information please contact: ubach_at_mpifr.de