13cm secondary focus receiver (2.2-2.3 GHz)
This receiver was constructed for S/X VLBI observations together with the 3.6cm system. It is a single channel system (RCP) illuminated by a paraboloid mirror (with a central opening) which is built around the 3.6cm horn (see a picture of the receivers in the secondary focus).

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
2.250 A RCP 13.6 150 0.49 306 17     354 Dez 2004

normalized Gain curve     (G = A0 + A1·Elv + A2·Elv2) Observed in
A0 = 1.0      A1 = 0.0      A2 = 0.0  

Comments:

  • The special configuration (tertiary mirror) leads to an additional loss of sensitivity.